William Bentvena was killed by associates without approval and nothing was done? That's odd. The Gambino's should really be embarrassed.
They murdered tommy desimone who killed him, Gotti at first tried to have Tommy’s father in law set him up(the father in law was part of the Gotti crew) but eventually he was brought to a fake making ceremony and killed
Also Foxy Jethroe was killed by Tommy Desimone and that was another reason he was killed...
Bentevena was better known as Billy Batts