So in Joe Colombo's days the Colombo family was almost a sub-group of the Gambino's?
This is why Don Carlo was the greatest Don.
He manipulated another family into coming under his control.
In the 1960's, the Gambino's and the Lucchese were very close (due to the wedding between Lucchese's daughter and Gambino's son).
Even the Genovese as big and as bad as they were couldnt have stood up to 3 families.
Oh.......Don Carlo was smart!