Having done an FDA submission myself I am actually amazed at how short this time period would be.

In the Old Days, to file an NDA required special arrangements with printing companies who could handle such a job and a team who arranged for the fleet of trucks required to deliver the submissions.

Edit: NDA = New Drug Application which includes, among other things, basically all your raw data which includes hordes of PII.

TBF it also includes a lot of boring in vitro data and analysis, preclinical (animal and in vitro) data etc which will have minimal to no PII.