Open-style fairings still subject to aerodynamic forces?

[Xyphos]

I've not tinkered much with the new open-style fairings, so I was wondering if a payload stored within one was still subject to aerodynamic forces.
and if not, if said payload were to be pushed out with a robotic piston, would it then be subject to aerodynamic forces?

[Geonovast]

I've tried using those open fairings as cargo bays, Dragon trunk-style.

It seems that nothing affects what's inside until the fairing is deployed.  Robotics don't work.  If you decouple something, say a payload inside a "trunk", it doesn't move.  It just sits in place.  So would a payload pushed out with a piston be subject to aero forces?  No way to know, since you can't push anything out with a piston.