If flying YHZ-YUL AC661 connecting same day to AC405 YUL-YYZ, will the system smart enough to ask me if I want to standby for the earlier AC403 YUL-YYZ during OLCI?
If I have bought M fare but upgrade confirmed in R, on standby for an earlier flight, will the system by hunting for a physical space in J cabin or my original fare class, i.e., physical space in economy?