The PAT is a play that is run outside of game time. If the opposing team intercepts the ball or kick and runs it back for a score, I think the result is called a one-point touchdown. It’s obscure but I saw it once in a college game. I don’t know if that applies to the NFL.
The ball was dead.
Of course, that's not true as of this season with the point after being blocked and run back you get two points.
I think it only happened once this year.
But I think it's a good rule change.