coach/official relationship

[rocky]

hey folks here is one for you. what is the limit to contact of conversation between coach and official outside the court. During tournaments that last several hours do you folks draw a line at the conversation with coaches before games and after in the hallways , hospitality rooms and etc. Seems to me once the game is over or well before a game is to begin there should not be a problem with coaches chatting with you folks but in our league some official just shy away and others will talk up a storm. What is the general un-written rule. thanks