He really had no people on his side, his Ontario connections came from Mirarchi and Desjardins in all likelihood. He was simply someone who was willing to capitalize on Rizzuto being gone and the weakened state of his mafia family. Something Desjardins already had in mind to do long before with Giuseppe De Vito. Montagna in all likelihood simply hooked up with members of that group, which is something that's supported in the book, Business or Blood. Di Maulo brought people to him, as well as the Arcuri brothers. So everyone around him, other than maybe Tony Magi, were introduced to Montagna through other people. And again, once Desjardins withdrew his support, Montagna's Ontario connections dissipated, those who stayed with him, which were like four or five guys aside from the Arcuris, guys like Larry LoPresti and Tony Suzuki, were hit after Montagna. Suzuki survived only to be killed years later . But Montagna was the first of his group to die. Those who weren't hit afterwards abandoned his cause.