Update:

Received an email earlier this evening indicating that the flight I was scheduled to fly on (AC347) was cancelled (due to "government travel advisory"), and that I had been rebooked onto an itinerary connecting via YYZ. Furthermore, instead of having 4 departures/day originally scheduled for that day (Aug 6th) between YOW-YVR, there is now only a single morning departure.

Now I get to decide on whether I want to do the a220 out of YUL or 788 from YYZ. Tempted to try the former!