I've thought this way about it too. Scarfo had an issue with Bruno while they were in prison. Manna and Scarfo get close in prison. He gets out and has problems with bruno over local 54 Gerace vs. Natale.

Maybe, just maybe Scarfo didn't know Bananas was gonna whack out Bruno; maybe he did. Bottom line, he benefitted most from it. I think Testa being boss was a clever diversion. Books say Scarfo turned it down and let Phil have it. Back then, NYC ran philly and Scarfo was the only one left in Phila with NYC connections. Chickie Narducci, Pete Casella, no one else had them.