I think a lot of guys have only read about the NY mob, and they think the mafia STARTED THERE, and still revolves around NY, when it's always revolved around profit opportunity and power.....
They read about New York and Montreal and know that the history of the two is intertwined. They look at it from a different angle than the ones who are obsessed about this "Sixth Family".
That being said, I believe that the Bonannos washed their hands of Montreal after the Montagna affair. The city has turned into a hornet's nest. I think that the link with the Bonannos died with Rizzuto.
"It was between the brothers Kay -- I had nothing to do with it."