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  <xsd:element name="FairValueAdjustmentOfPrivatePlacementWarrants" id="nn_FairValueAdjustmentOfPrivatePlacementWarrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability" id="nn_IncreaseThroughInitialRecognitionOfConversionOptionDerivativeLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDereaseThroughFairValueMeasurementAdjustmentOfConversionOptionDerivativeLiability" id="nn_IncreaseDereaseThroughFairValueMeasurementAdjustmentOfConversionOptionDerivativeLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability" id="nn_IncreaseThroughInitialRecognitionOfAssetPurchaseAgreementLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="SeniorSecuredConvertibleNotesDue2028Member" id="nn_SeniorSecuredConvertibleNotesDue2028Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="AgreementTypeAxis" id="nn_AgreementTypeAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="AgreementTypeDomain" id="nn_AgreementTypeDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="NotePurchaseAgreementMember" id="nn_NotePurchaseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="IndentureAndSecurityAgreementMember" id="nn_IndentureAndSecurityAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorSecuredNotesDue2026Member" id="nn_SeniorSecuredNotesDue2026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="DebtWarrants2026Member" id="nn_DebtWarrants2026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="DebtWarrants2028Member" id="nn_DebtWarrants2028Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="CommonStockPurchaseWarrantsMember" id="nn_CommonStockPurchaseWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="PurchasersMember" id="nn_PurchasersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="GuarantorsAndGlasTrustCompanyLlcMember" id="nn_GuarantorsAndGlasTrustCompanyLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="PercentageOfAccruedAndUnpaidInterestOnDebt" id="nn_PercentageOfAccruedAndUnpaidInterestOnDebt" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants" id="nn_DebtInstrumentRedemptionPricePercentageOfExercisePriceOfWarrants" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="DebtInstrumentRedemptionPricePercentageOfConversionPrice" id="nn_DebtInstrumentRedemptionPricePercentageOfConversionPrice" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="ExercisePeriodOfDebtIssuedFromDateOfInitialClosing" id="nn_ExercisePeriodOfDebtIssuedFromDateOfInitialClosing" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="FortressInvestmentGroupLlcMember" id="nn_FortressInvestmentGroupLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="EntityAffiliatedWithNeilSSubinMember" id="nn_EntityAffiliatedWithNeilSSubinMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount" id="nn_DebtInstrumentConvertibleNumberOfSharesPerThousandDollarsPrincipalAmount" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount" id="nn_DebtInstrumentConvertibleDenominatorValueOfPrincipalAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="MinimumPercentageOfOwnershipInterestHeldByStockholder" id="nn_MinimumPercentageOfOwnershipInterestHeldByStockholder" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="PercentageOfCommonStockOwnershipLimitation" id="nn_PercentageOfCommonStockOwnershipLimitation" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice" id="nn_ExerciseOfWarrantsLimitationPercentageOfCommonStockOwnershipTerminationPeriodNotice" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="PercentageOfCommonStockOutstandingLimitation" id="nn_PercentageOfCommonStockOutstandingLimitation" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="DebtInstrumentInterestRateIncreaseAtEventOfDefault" id="nn_DebtInstrumentInterestRateIncreaseAtEventOfDefault" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales" id="nn_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountAtEventOfCertainNonOrdinaryCourseAssetSales" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="WarrantsAndWarrantLiabilityTable" id="nn_WarrantsAndWarrantLiabilityTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="PublicWarrantsAndPrivatePlacementWarrantsMember" id="nn_PublicWarrantsAndPrivatePlacementWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="PublicWarrantsMember" id="nn_PublicWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="NotePurchaseAgreementAndIndentureAgreementMember" id="nn_NotePurchaseAgreementAndIndentureAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="WarrantsAndWarrantLiabilityDetailsLineItems" id="nn_WarrantsAndWarrantLiabilityDetailsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="DescriptionOfWarrants" id="nn_DescriptionOfWarrants" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="WarrantsIssued" id="nn_WarrantsIssued" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity" id="nn_StockReclassifiedDuringPeriodSharesReclassificationFromWarrantLiabilityToEquity" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="WarrantsToPurchase" id="nn_WarrantsToPurchase" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="ClassA1CommonUnitsMember" id="nn_ClassA1CommonUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="ClassCRedeemablePreferredUnitsMember" id="nn_ClassCRedeemablePreferredUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="ClassDRedeemablePreferredUnitsMember" id="nn_ClassDRedeemablePreferredUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="CapitalStockSharesAuthorized" id="nn_CapitalStockSharesAuthorized" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="CapitalStockParOrStatedValuePerShare" id="nn_CapitalStockParOrStatedValuePerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxesDetailsTable" id="nn_IncomeTaxesDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="USFederalAndStateMember" id="nn_USFederalAndStateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxesDetailsLineItems" id="nn_IncomeTaxesDetailsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessOperationExpenses" id="nn_BusinessOperationExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities" id="nn_GainLossOnChangeInFairValueOfWarrantsAndDerivativeLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="Customer1Member" id="nn_Customer1Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="Customer2Member" id="nn_Customer2Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="Customer3Member" id="nn_Customer3Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfCustomers" id="nn_NumberOfCustomers" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="PeriodOfIssuanceFromDateOfInitialClosing" id="nn_PeriodOfIssuanceFromDateOfInitialClosing" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants" id="nn_MultiplyingFactorForDeterminationOfAggregateNumberOfSharesOfCommonStockToBeIssuableUponExerciseOfWarrants" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants" id="nn_ThresholdPeriodFromDateOfInitialClosingForExerciseOfWarrants" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="NestwaveSasMember" id="nn_NestwaveSasMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessCombinationConsiderationTransferredUpfrontCashPayment" id="nn_BusinessCombinationConsiderationTransferredUpfrontCashPayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="BusinessAcquisitionStageAxis" id="nn_BusinessAcquisitionStageAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="StageTypeDomain" id="nn_StageTypeDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="InitialAccountingIncompleteMember" id="nn_InitialAccountingIncompleteMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="MeasurementPeriodAdjustmentsMember" id="nn_MeasurementPeriodAdjustmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTechnologyFiniteLivedIntangibles" id="nn_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTechnologyFiniteLivedIntangibles" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedSoftwareFiniteLivedIntangibles" id="nn_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedSoftwareFiniteLivedIntangibles" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="IncreaseDereaseThroughChangeInEstimateForInitialRecognitionOfConversionOptionDerivativeLiability" id="nn_IncreaseDereaseThroughChangeInEstimateForInitialRecognitionOfConversionOptionDerivativeLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="StockIssuedDuringPeriodValueRestrictedStockAwardVested" id="nn_StockIssuedDuringPeriodValueRestrictedStockAwardVested" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="StockIssuedDuringPeriodSharesRestrictedStockAwardVested" id="nn_StockIssuedDuringPeriodSharesRestrictedStockAwardVested" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm" id="nn_IndefiniteLivedLicenseAgreementsWithFederalGovernmentTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm" id="nn_IndefiniteLivedLicenseAgreementsWithFederalGovernmentRenewalTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock" id="nn_ScheduleOfDepreciationUsingTheStraightLineMethodOverTheEstimatedUsefulLivesOfTheAssetsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="SummaryOfSignificantAccountingPoliciesTable" id="nn_SummaryOfSignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="PinnacleAndTerraPoiNTNetworkAssetsMember" id="nn_PinnacleAndTerraPoiNTNetworkAssetsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="SummaryOfSignificantAccountingPoliciesLineItems" id="nn_SummaryOfSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="LeaseHoldImprovements" id="nn_LeaseHoldImprovements" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="DilutiveSecuritiesEffectOnBasicEarningsPerShareReversalOfInterestExpenseAndAmortizationOfDebtDiscount" id="nn_DilutiveSecuritiesEffectOnBasicEarningsPerShareReversalOfInterestExpenseAndAmortizationOfDebtDiscount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="SusanInsleyMember" id="nn_SusanInsleyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="SammaadShamsMember" id="nn_SammaadShamsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="ChristianGatesMember" id="nn_ChristianGatesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="TrancheBInvestmentMember" id="nn_TrancheBInvestmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="AdditionalCommitmentForEquityMethodOfInvestment" id="nn_AdditionalCommitmentForEquityMethodOfInvestment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="PinnacleAndPNTNetworkAssetsMember" id="nn_PinnacleAndPNTNetworkAssetsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="AcquiredIndefiniteLivedIntangibleAssetsLicensesTerm" id="nn_AcquiredIndefiniteLivedIntangibleAssetsLicensesTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="AcquiredIndefiniteLivedIntangibleAssetsLicensesRenewableTerm" id="nn_AcquiredIndefiniteLivedIntangibleAssetsLicensesRenewableTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="AdjustmentsToAdditionalPaidInCapitalChangeInEstimateOfIssuanceOfCommonWarrants" id="nn_AdjustmentsToAdditionalPaidInCapitalChangeInEstimateOfIssuanceOfCommonWarrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="StockIssuedDuringPeriodValue2028NotesConversion" id="nn_StockIssuedDuringPeriodValue2028NotesConversion" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="StockIssuedDuringPeriodShares2028NotesConversion" id="nn_StockIssuedDuringPeriodShares2028NotesConversion" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="ShareBasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1Minimum" id="nn_ShareBasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1Minimum" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1Maximum" id="nn_ShareBasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1Maximum" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="SharePriceMinimum" id="nn_SharePriceMinimum" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="SharePriceMaximum" id="nn_SharePriceMaximum" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xsd:element name="LiabilitiesFairValueAssumptionsDebtYieldMinimum" id="nn_LiabilitiesFairValueAssumptionsDebtYieldMinimum" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="LiabilitiesFairValueAssumptionsDebtYieldMaximum" id="nn_LiabilitiesFairValueAssumptionsDebtYieldMaximum" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="WarrantsRedemptionPrice" id="nn_WarrantsRedemptionPrice" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xsd:element name="WarrantsRedemptionPayment" id="nn_WarrantsRedemptionPayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="AdjustmentsToAdditionalPaidInCapitalRedemptionOfCommonWarrants" id="nn_AdjustmentsToAdditionalPaidInCapitalRedemptionOfCommonWarrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="Various2028NotesConversionDatesMember" id="nn_Various2028NotesConversionDatesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="DecreaseThroughDerecognitionUponConversionOf2028Notes" id="nn_DecreaseThroughDerecognitionUponConversionOf2028Notes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="WarrantRedemptionMember" id="nn_WarrantRedemptionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="SpartacusAcquisitionCorpMember" id="nn_SpartacusAcquisitionCorpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="ConversionOfDebtAndAccruedInterestIntoCommonStock" id="nn_ConversionOfDebtAndAccruedInterestIntoCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:balance="credit" xbrli:periodType="duration" />
</xsd:schema>
