Officials time out for heat

[WhistlesAndStripes]

After spending some more time in my rulebook, I now wish to retract my previous retraction:

Rule 9-8-2:

Three attendants, none of whom is a coach, may enter the field to attend their team during a charged time-out or a TV/Radio timeout, during the one minute following a try, a successful field goal or safety, and prior to the succeding free kick, between periods and during an official's time-out for unusual heand and humidity.

Sounds to me like coaches ARE NOT allowed on the field during these heat and humidity timeouts.