On the national TV coverage at least (I live in Dallas now) they never showed a replay. I am not sure the booth guys had anything to look at.
This. I was upset because they weren't showing a replay in time. The booth guys for the Saints see the same replay we see, so if the replay is non existent or late, they cannot communicate with Payton in time to throw the challenge flag.
Had Payton gotten the opportunity to challenge, the replay would've clearly shown that Pierre's knee was not down, in fact, his knee was on the Atlanta defender as he stretched for the First Down.