[APG]

Originally Posted by Texas Aggie

Yeah, with a 20 minute half time, at least 6, and as many as 18, timeouts -- not including TV, change of possession, scoring, etc. Take away the planned dead time and the actual on field dead time for an NFL game is less than 30 minutes. You reach that in the 3rd inning of MLB.

Make that closer to 11 minutes of actions according to a study by the Wall Street Journal

Football Games Have 11 Minutes of Action - WSJ.com