The TV production squeezes commercials in during stoppages. But American football has a large number of stoppages (between every play, during timeouts called by

The TV production squeezes commercials in during stoppages. But American football has a large number of stoppages (between every play, during timeouts called by the players/coach, after scoring, when a player has an injury, between quarters) so there are lots of chances to squeeze commercials in. They have also added stoppages basically so they can squeeze an additional commercial break, such as the "2 minute warning" at the end of the half, which is just an automatic timeout (and inevitable commercial break). Some say that the addition of video review (where referees review a contested call) was an excuse to add more commercial breaks. There is no director, but there is a huge production team synchronizing everything and making sure that they squeeze in as many commercials as possible without missing any of the action.