"Note 1: It is a catch if, in the process of attempting to catch the ball, a player secures control of the ball prior to it touching the ground and that control is maintained during and after the ball has touched the ground."
If the ball shifting in Dez's hand constitutes a loss of control, why wouldn't the ball shifting from the Packers player's forearm to his hand constitute a loss of control? Both should be complete or incomplete. The calls cannot split and both be good calls.
Can you support them being split by a quote from the rules?
Both incomplete: Packers last TD drive stops (it was a 3rd down play). Both complete: Cowboys have 1st and goal on the Packers 1 yard line. Only by calling the two completion rulings different (both were booth reviewed), does the game end the way it did.
It did more than just shift in Dez’s hand, it popped out. If you watch the long run reverse angle shot you can see he’s flipping over and the ball is in the air, not touching him at all. That’s clearly a loss of control. If it had been a catch that’s a fumble.