It wasn't directed at you

I don't think it was apparent at all that Sarno was acting boss of the entire Outfit. The only source is one unknown informant who could be a low level associate for all we know. Joe Pistone was in the Sonny Black crew for years and didn't even know who was at the three capos ambush. What you're doing is also speculating. DiFronzo "may" have been the elder statesman while Sarno was acting boss. The informant said Sarno was the boss, not acting boss. If he really was kicking up, then he seems more like a crew boss.