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IŽm afraid even if you found a few dozen people who missed their connecting flight who were in a similar situation, you wouldnŽt get any compensation from BA.
Btw, even if you had connected AC-AC, you still would have had to collect your luggage, go through customs and drop off your bags again.
IŽd only consider a 60min connection at any Canadian airport (arriving from Europe) if I had hand baggage only, had Elite status with the airline and there was another flight to my destination that day. Otherwise this is a recipe for desaster.