JEL,
Some other thoughts on charged conferences (ASA)...
It is not a charged conference if the coach enters the field to talk with his players during either an official's time out (confer with partner, for example), or a time out called at the request of the other team, so long as the coach does not delay play (i.e. he has left the field by the time play is ready to resume).
It is not a charged conference if the coach informs the umpire prior to entering the field (crossing the foul line) that he will be replacing the pitcher (and he does replace the pitcher).
But, you probably knew that!
