TV/DVR Issue

ESPN rather stupidly only lists 3 hours for this game. If I am tivo'ing the game, how much time do I need to add to cover the whole game? In the past, and given the offense, I would think 2 hours, but with the new clock rules, I think 1 hour might be enough.
Thoughts? This is also a notice for those that are recording the game to watch later so you don't miss the end.
Thoughts? This is also a notice for those that are recording the game to watch later so you don't miss the end.