I didn't notice any change in the amount or timing of replays. Quite frankly, there weren't a lot of plays worth seeing 6 times in slo-mo.

Rams came up and ran a play quickly. The Pats didn't challenge. It happens in every game I've seen this year.

This wasn't an important play. The fact that the Pats didn't challenge was likely do to the fact that challenges are more important in a game like this and they weren't going to burn one unless it was an important play. This wasn't an important play.