As I said previously, an AFL umpires coach address the umpires of the match at half time. Often (not always) you see the umpires pull their heads in after half-time.
I wouldn’t be surprised if they were slapped across the knuckles after that first half.
But I won’t be moved in my opinion that Troy Parnell is out to get the Essendon football club. I can’t believe that; 1. He keeps his job as an umpire at the highest level; and 2. He is allowed to umpire games that EFC is playing in.