Looking at LHR-YYC on a Sunday in february. booked Latitude, so I can upgrade at time of reservation.
LHR-YYC non-stop has no R. Booked LHR-YYZ-YYC. Which makes sense since my wife stops over for a few days at YYZ, visiting our daugher.
Anyway, got the upgrade confirmed on the LHR-YYZ leg. Waitlisted on the YYZ-YYC. I have been checking regularly, no R inventory opening at all.
Still, I fully expect that closer to departure (and closer to the Tango+ windows) they'll open me a seat.