FYI for those complaining about the refs. Just understand the rule.
No player shall grab the inside collar of the back or the side of the shoulder pads or jersey, or grab the jersey at the name plate or above, and pull the runner toward the ground. This does not apply to a runner who is in the tackle box or to a quarterback who is in the pocket.
https://operations.nfl.com/the-rules/nfl-video-rulebook/horse-collar/
The ref announced the end of the game like he was telling his kid he was going to go grab a pack of cigarettes and be right back.