Judging a "judgement" call

[rickman5]

It happened to me again a few days ago where one of my partners misapplied a very common knowledge rule.

Big cross-county rivalry game (same region) and we were in the Boys Varsity game. I'm trail table side and my partner is at the C. A1 drives to that basketbal and attempts a try. The try does not hit anything and he grabs his own rebound. Players look around expecting a whistle and my partner hits it and signals traveling. I figure, with a veteran official, he had him taking steps on the rebound so I don't say anything and we play on.

A couple trips down the court later he explains to the head coach why he called the travel. He tells the coach that the ball didn't touch rim. The coach knows the rule and immediately calls him out on it. My partner continues to plead his case that he cannot do that. We have some sort of switch so I'm now by the coach and he tells me the situation. I hate to throw my partner under the bus but I had to tell the coach he was right and we would talk about it during the next dead ball. Coach then gets on to me for letting him misapply the rule. I explained that I thought he had a travel after he caught the rebound.

Next dead ball I talk to my partner about the rule. He acted like it was the first time he had heard that. I had to show him the rule book at halftime. My question is when is it ok to come in and question a fellow official's "judgement" call (seemed to me he had a travel)? Would anyone have handled this situation any differently?