Originally Posted by
flyerCO
Companions get upgraded at same priority as the Medallion.
On the same reservation, yes, but since the OP said he was already in F and the companion was in Y they must have been on separate PNRs, in which case "your upgrades will clear based on your individual Member Status and confirmation windows" so no sooner than 24 hours for general member, and usual window (for the companion) otherwise.