I have never seen any proof, or even strong indication, that Castellano took any money from drugs off Conte. Or off anyone else. I think that is said about him as way to make him not seem like glamorous, or noble Mafia boss. They even had his home bugged, yet nothing on him taking drug money off Conte. I looked though everything I could on matter there is no evidence of it at all. I think it is a myth that has grown, or that people who feel worried that Mob may get glamorized perpetuate.