NFL conference championship weekend

[GridIron26]

I think referring issues parallels with new rules established since last few years? NFL made changes to rules that are not norm for football in old times. I confess I don't know much about referring but I can imagine the thinking process figuring out numerous rules during a play that happened within split of a second can be very challenging. Not to mention the fact that few rules are somewhat vague; great example would be the issue with defenders using their body to sack QB in beginning of this season was problematic because NFL did not make sure all referees fully understood what sack entails penalty.

Edit: Referees should not have missed the pass interference in Saints vs Rams game, I think it was pretty obvious.