The sole proof his "supporters" have is that Tony Spilotro allegedly sought his advice because of his close vicinity to Palm springs Where accardo resided during the late 70s/early 80s, and that Accardo allegedly recommended Ferriola to be promoted to #1 once Aiuppa got sent away. Spilotro ended up getting killed and Ferriola was never promoted to boss. Carlisi was. So There ya go.