Why T.J. Watt wasn't flagged for helmet-to-helmet hit on Brett Hundley before Steelers beat Packers

T.J. Watt's crucial sack included helmet-to-helmet contact, but wasn't an example of roughing the passer. The Pittsburgh Steelers got the ball back in the final minute of regulation after outside linebacker T.J. Watt came up with a crucial sack that helped end a Green Bay Packers and eventually set up a game-winning field goal for Chris Boswell. But replay showed Watt colliding with clear helmet-to-helmet contact on Packers quarterback Brett Hundley. It appeared to most watching, including Al Mi...