That's the thing with Joe Magliocco, by the mid 1950s he was a shell what he was in the 1920s till that point. He is still a chief suspect in the murder of Peter Leone, rumored to have been a heavy hitter, which throws a wrench in it was all Albert Anastasia crew since Joe Florino, Double A's top gunman is the prime suspect in the Joe Peraino shooting. Regardless, Magliocco was a major force and his father Giovanni is rumored to have been made, which would explain the Magliocco-D'Agati situation where nothing happened to John after he killed Frank, although there is a lot more is to that.