Idk if it was clear on TV or not, but on the fake punt, the ref threw the flag AFTER Faison juked the dude in the open field. Like he was standing at the line either figuring ND MUST have done something illegal, or the fix was in and he threw the flag so they could huddle and figure something out.
Watching the official “huddle” as they discussed, I would bet my life savings that the white hat was just giving the ACC booth time to come up with something and was waiting for advisement in his ear piece. I know there is a “deception” penalty they can throw on special teams trick plays, and it’s related to hiding a guy on the sideline during substitutions, so all players are supposed to be visible between the numbers when getting into formation, I thought for sure they were going to misapply that one and then apologize to ND later