KDM,
It is a good preventive officiating practice for the other official (or trail in 3-person mechanics) to talk with the coach and prevent further technical fouls, especially for standing in the coaching box after receiving a direct technical.
As we all know most coaches do not know the rules, and if they do, they open the envelope as far as we will allow them to.
The bench decorum rule is one of 'our' associations points-of-evidence this year as we have not done a very good job of enforcing the rule in the past.