Inspired by MountainView, I compiled the PD schedule for the whole week in the peak summer. You can see how some things correspond - the CUN/MCO morning departures on days 256 with the YYT morning flight x256, the FLL days 16 with the YLW/YWG x1/x6. The main gaps at this point are the extra YYT flight arrives at 1518 and doesn't have anything to turn to (ditto the CUN flight on day 2), and still the gap with the YVR evening departure not running days 236 - really with the AC and WS departures they should bring this back, or it's a good timing if they wanted to increase YYJ with an evening departure or a red-eye return.
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