Welcome and thanks for visiting the Community, @tasmai.
In QuickBooks Online (QBO), the option to get an original bank narration/statement is currently unavailable. You can only get this through your bank's website.
However, you can use your previous reconciliation report as a reference. This report summarizes the following:
Beginning and ending balances.
Lists which transactions were cleared and which were left uncleared when you reconciled.
Here's how to pull it out:
In QBO, go to Reports menu at the left pane.
Type Reconciliation Report in the Find report by name search bar.
Select Reconciliation Reports.
Tick the Account for the reconciliation report you want to view.
From the Report period drop-down, choose the reconcile period.