Pelican Universal pcb + Xbox 360 pcb

I have a few of these Pelican pcbs laying around. No idea if the pin diagram is accurate, just what I’ve received from another member a long time ago.

Would it be possible to wire this pcb up alongside an Xbox 360 pcb for multiplatform use? Just wondering before I go out and try to commission someone to do a padhack for me.

That pelican isn’t common ground, so getting it working with a xbox360 pcb is rediculously hard. Just don’t.

Thanks, what if I were to have them wired separately to say a DB-15/25 connector, and just switched between the two as necessary? That’s doable right, or does the grounding issue still pose a problem?