Pen Cartridge vs vials and the 28 day 'suggested usage'

[e_west]

I'm curious of the longer term storage of a reconned pep in a cartridge vs in a vial. I understand the suggested usage of a reconned pep within 28-30 days has more to do with the BACw keeping potential bacteria growth down with repeated poking of the vial top diminishing over time.
With loading a cartridge and purging the air, would it be plausible the pep would encounter less contamination possible?
It's been on my mind for a while now and figured this is the best place to ask!
Appreciate the community, great place for learning and sharing