To add to this discussion a bit more:
On a PAT where the kick is good and the holder and/or kicker are run into (not roughing) by B and since it is not a personal or an unsportsmanlike conduct, the penalty does not carry over. Correct?
Reason I ask is that this happened on back to back PATs in a playoff game the other night and, although I think I am clear with the running into penalty as not being enforced on the free kick, its seems odd to basically allow B to do this on every kick if they happened to be so inclined.