Exactly why he most likely he should've gotten his button then, but didn't. There has to be a reason for that. He was responsible for multiple murders which was said to be linked back to the Bruno Family, and was knee deep in the unions. Always with these families you tend to see a made guy with similar union positions that Natale had. But I guess it made no difference since he was operating on behalf of Bruno anyway. Still, I think Natale is full of shit, I sincerely doubt that he was ever Bruno's "Right hand man", or that he met and operated on behalf of Carlo Gambino as well. Which is something he also claims in the book.