Heres the thing; I think the union thing maybe made it possible , maybe the guy did represent them. In that Mary Ferrel document is says they had Eboli acting boss, but they were wrong that it was Catena who had the last word. Then he goes to jail, Eboli gets killed. And Genovese guys are in the middle of taking over the Pension fund, which Bufalino controoled apparently, maybe they did trust him like that, the Genovese always kinda put business over everything...