Theory Petey and Irving have been to the testing floor

Maybe you guys have already discussed this, but I just saw this theory on twitter and wanted to bring it over because I think it explains so much. Petey said "I found a new department. One they don’t tell us about. One where you don’t get to leave." I don't remember which exact episode it was. So maybe the department he is talking about is the testing floor? Because the testing floor is an unsevered floor it was his outtie who was there and maybe saw Gemma? and what he saw their prompted him to reintegrate. The map he left Mark was the map to the exports hall because he wanted Mark to go down their and find Gemma. And maybe Irving was with him when he found it and that's why outtie Irving is painting the exports hall. Is what is in outtie Irving's paintings the exports hall with the triangle going down or the hallway in the testing floor where I believe the elevator triangle points up? I don't remember. But either way, outtie Irving seeing what's going on on the testing floor could have been his motivation for getting involved in whatever anti-lumon activities he's doing right now.

Edit: Okay so I looked and others have pointed this out but the elevator on the testing floor looks different than the one in Irving's paintings.