
Perhaps, the actual reason no 'pass interference' was called......
Yeah, that was probably it.
Or maybe it was the fact that they were held to 6 points total output in three quarters.
Or even the fact that in the 8 minutes of football after the call, the Lions failed to stop Dallas converting on 4th, failed to stop Dallas scoring a game winning td, shot them selves by scrubbing a very important punt, failed to convert on 3rd down multiple times, and fumbled the ball twice on their most important drive.
But it was one questionable call that lost them the game.