Sorry, but if a coach brings a potential rules violation to your attention prior to a game, and you take it as an insult, then that sounds a lot like arrogance to me. None of us is perfect and sees everything all the time. I've been officiating for over 40 years. I've seen it all and I know the rules. If a 20 year old volunteer coach comes up to me and asks me to look out for a situation, I thank him/her for the heads up and I keep an eye out for it. If the same coach comes up to me during the game to tell me that the situation is occurring and asks why I am not calling it, I listen to his/her point of view. Maybe I am just not seeing what the coach is seeing from a different angle. It happens. When the coach has finished, if I disagree I explain the rule and why the coach is incorrect. No one's feelings are hurt and we are now all on the same page. As long as the coach is respectful, they can ask any question they like. My ego has no place in the game. I am there to see that rules are followed and to educate those who don't understand the rules (within reason while the game is in progress). That's all. A cooperative environment works a lot better than an adversarial one. I've also been a coach and tournament director for just as long and I don't hire officials who don't work well with coaches.Well I take it as an insult because the coach is saying you don’t know what you’re doing. I understand that coaches may have had bad umpiring in the past, but I’m not one of them. No arrogance involved.