Dropping a "T" FOR your partner

[Ref Daddy]

Situation:

In a game your partner is getting (justified or not) heat from a coach. Your aware - you hear it.

Would you ever call the "T" on a coach in this situation for something (s)he was directing to your partner? ...and partner was ignoring?

If partner takes it/ignores it, should you?

Would you make the call for what you observed or heard in this situation?