Bring coaches together?

[Scrapper1]

I'm doing my iRef training and there's a "What would you do?" question about a lengthy delay to fix a scoring question. The result is to the detriment of Team B. And the trainer says to go to Coach B first since s/he is the one receiving the bad news.

Is there a compelling reason to give the information to the coaches separately? My basketball background says to bring the coaches together. This ensures that (1) neither coach thinks something is said about them; and (2) if there's a suggestion that you said something inappropriate, there's a witness to the conversation.

Would I be given a bad grade for bringing the coaches together to tell them the result of the scoring review?