That makes sense, and it would have been a gamble to use the challenge that early in the game, but when DeVonta got up and basically told the world he didn't catch it... I'd have been grabbing that red flag.... especially since it would have forced a turnover on downs. At the very least, call a TO and give the reply official more time to review it. Wouldn't have mattered anyway though... I don't think Philly was going to lose that game.