Well...in football you don’t get those unscheduled timeouts where the game grinds to a halt while two designated fighters try to punch each other’s lights out.
Ever notice that a hockey fight seldom breaks out where the puck & the cameras are? They always square off elsewhere.
Play ceases in football after every 4-second play to show numerous replays while all the players mill around, and then there are all the lengthy scheduled commercial timeouts and challenges.
That’s why you can watch all the action of a football game in 11 minutes even though it’s on the air for 3 hours.