Some would say the old rivalry of the Montreal Canadiens and the Quebec Nordiques was a lot bigger!!
I'm sure it eventually became that way, but The Habs (Canadiens) and the Maple Leafs were original members of the NHL (inaugurated in the '42-'43 season), along with the Bruins, Red Wings NY Rangers and Black Hawks became the "Original Six". The rivalry started then. It was a very healthy rivalry.
The Nordiques first became a member of the WHA (World Hockey Association major pro league in it's first year of existence (originally housed in San Francisco as the SF Sharks, but moved & renamed to the Quebec Nordiques before the inaugural season even started. That was '72.
The league existed until '79 - it had many operational problems, and extremely serious financial problems.
I personally loved to watch both the Quebec Nordiques and the San Diego Mariners - two exceedingly exciting teams, containing some fantastically gifted French Canadian players Nordiques had Marc Tardif, San Diego had Andre Lacroix.. Toronto Toros, also in the franchise, had Marc Napier.
Probably the best ever pro ice hockey player in history, Wayne Gretsky, started his fledgling career in the subordinate WHA league
The league essentially folded, and a number of teams( 4 from the original 12) merged with the NHL in '79.
So, any rivalry between "Les Habitants " and "Les Nordiques" started 37 years after the Toronto/Montreal dynasties began their jousting.
As a footnote: I used to be a fanatical hockey fan. Over the years I've been here in Canada, the quality has been diluted considerably as a result of franchise expansion. Haven't watched a game for close to 20 years. Very sad.
Edit: Nordiques relocated to Colorado (Denver) in '95, so the rivalry with the Habs is even shorter than I've indicated. !