Couple Questions on 12/29 NFL Games

[SamG]

Originally Posted by Rich

On 1, no -- it was a usual play from scrimmage, so the play clock is 40 from the end of the previous play.

I thought there was a delay of game penalty? I had assumed the OP was talking about the clock getting reset after the penalty enforcement. Do I misunderstand?

2 -- it's a new rule this season and one probably nobody who's not an NFL official had heard of prior to yesterday. OK, maybe a few people knew it -- I didn't.

So what's the new rule?

And thank you.