I do know this.
Cowher stayed approx. 4 hrs after the game, before he came out to leave for home. Many around me said he usually watched the game film (less commercials ect.. I still got to spend about 8 minutes with him and his wife / daughter.
There was only about 20 of us left to get autographs, and I knew that Bill always stayed to the last one. I gave my spot up so I could be the last one. I told him where I was from (long ways and he said he never had a fan from there before) so he gave me extra time. He was great, we talked non-football, and he was genuinely a very good man. Wife and kid was awesome as well.
I don’t know and haven’t heard any story’s of how long after game Coach Tomlin stays. I’d like to hear of how much time he puts in and I also realize it would be a lot. Today’s game hasn’t evolved to 8-5 job, but then again, one never knows.
Salute the nation