Didnt know it was this hard!
Now, on to flexing's rules. The NFL makes the game-swapping decisions. But CBS and Fox can each protect five of their regularly-scheduled Sunday afternoon games, but not two on the same weekend — and none for season-ending Week 17.
There's more. Only three NFL teams can appear as many as six times in primetime — on NBC, ESPN or the league's own NFL Network — and no team can appear more than four times on NBC. And NBC can't pick up games already slated for primetime on ESPN or the NFL Network.
I thought the Dallas Thanksgiving game was on CBS, if so that might not have counted towards the 6.
Patriots likely to rule NBC's 'flex' options down stretch - USATODAY.com