One of the earlier theories suggested that they were involved, but since then a lot of new information has come out and it seems their role is secondary at best. The Rizzuto-Cammalleri family has established ties with the Commisso clan--one of their family members is married to a Commisso member. Sal Montagna as we know made regular trips to Toronto, but it is unclear if he met with 'Ndrangheta clans or the Toronto Sicilians. I think it's the latter, although he could also have met with both.