I done a cup final in my early days, probably going back 15 years now, where my assistant (also my brother) flagged for a penalty.
Pre game instructions were not to get involved unless i am well out of position (maybe like Atwell was in the final on Saturday), or completely blindsided but look at me first and see if I'm asking for help.
I was waving my arms saying no, cutting the grass so to speak.
And with that my assistant flags indicating he's seen something.
Balls out for a goal kick from this attack.
I've gone over to assistant to ask what he has seen that I may have missed. After about 20 seconds of chatting, I've walked away and continued with goal kick.
Come half time, the team who would have had the penalty, were leading 3-0.
They complained to me, saying i should've listened to my assistant.
Tried to explain the reasons why (which were i was in a perfect position to see the whole incident and far closer than my assistant) but they were not having it.
They went on to lose 4-3. And blamed me (for years, literally. Everytime I saw them in the street).