American football rules have the clock stop every time play stops, unlike association football which runs the clock continuously. This means that for 11 minutes of gameplay there is a lot of other stuff going on with a lot of commentary and replays as the players substitute on and off the field and move to get in position for the next snap.

So that means it's not 100 commercials per 11 minutes of content since much of the content happens while the clock is stopped.