Okay, I had to refresh my memory, DeCiccio supposedly went to Casso asking him his view on Big Paul, according to Gravano, Casso told DeCiccio "he didnt give a fuck about Big Paul". Either way Casso wasnt in the position to be sought out for a murder plot against a boss as he never told Furnari of his convo with Deciccio. After Castellano was killed, Gigante & Corallo were furious, they both decided Gotti had to go. Jimmy Brown and Danny Marino, Gotti's capos, were in on the plot. Another indication that Gotti never actually inquired about murdering Castellano, was the fact that he told the other bosses that he had guys looking into who did it. Corallo and Gigante thought it was bull. They gave the hit to Casso and Amuso who planned it out. So yeah, Corallo was the boss at the time and okayed the hit. Casso had expressed indifference when originally was approached by DeCicco.