I don’t know since they were slipping before half. Unless it had to be of a different quality knowing the show was coming. My biggest problem with it is yes both teams played on it but it isn’t something they could prepare for like if it was muddy, snowing, or raining ahead of time. They weren’t expecting it to be slippery like that and game plans could have changed.The halftime show prep created alot of damage. It's unlikely the grounds crew could do much more with it but this should cue the NFL to prioritize the playing conditions more.
In regards to officiating. I wonder how a trial game week would go of us being able to hear what is discussed about the penalty and why a flag was thrown in real time would help some issues or concerns. And maybe to not slow the game down further, the head ref gets interviewed at halftime as well about any calls and they can address them.