Notice the flow of oil from Alberta to Quebec. Used to be Quebec obtained a vast amount of its oil by shipments from tankers. They bought Saudi and Nigerian and Venezuelan. Not any more. Quebec now buys exclusively from Alberta shipped to Montreal from Michigan. This is important to weigh in discussions because it means Quebec is now married to Alberta for energy security but no one acknowledges this.
In a united Canada this would be standard operating procedure for Alberta to conduct commercial enterprise with Quebec. If the nation was governed by national interests instead of regional interests Alberta wouldn't feel separated from the proceedings of running the country and prospering in it.