Gotti was tough but he did fear certain people and Casso was one of them. I still don’t know for sure if he really wanted Casso to be hit in 1986. Angelo Ruggiero and Casso hated eachother and after Casso said that Angelo was an idiot Angelo wanted to kill him because he was a hothead. Now obviously Gotti has to of known about it but he was also in jail at the time. But once it failed a Gotti sure as hell did everything he could to make peace with Casso. Casso still ended up killing Eddie Libo in 1990