Morning TV shows obviously wouldn’t work without some fun banter between the co-hosts, and it probably wouldn’t be good for the co-hosts to run out of banter before the camera starts rolling, but no conversation off-camera sounds like it was difficult or Kelly Ripa, judging by her comments to the New York Times.
Her dynamic with Ryan Seacrest is evidently much more open.
Regis Philbin had a rule about saving the chitchat for in front of the camera, even apparently to the point that he wasn’t a fan of morning greetings.