It's the reason why Aikman is the one player from that 90's dynasty that you don't see in the owner's box or attending games.
Normally he's covering a game on Fox so it's not like he can magically be in Dallas.
I think he's also sensitive to being on camera covered by another network and demonstrating any partiality to the Cowboys like Emmitt did or Irvin unapologetically does.
I've seen him in a booth side by side with Jones.
I forget who was covering but they had a camera right in Jones' booth and directly on Aikman. At first glance Troy was sitting right next to and chatting with Jones. When the camera was on for the second time, Troy kept his expression totally blank and focused on the field.
I thought that was funny because a Cowboy QB had just been crushed and Jones could be seen reacting harshly and visibly groaning. Didn't sound like much fun for Aikman to keep that mask up, so I can see why he doesn't make it a practice.