Originally Posted by
CO-PLAT
Just when I thought I knew how this worked. Over a week ago I linked my wife's ticket with mine. She is a no-status Skymiles member. Traveling Saturday A-B-C. Today (5 days out) I was upgraded to F on the B-C segment and am still in C+ on the A-B segment. My wife was not upgraded to F on the B-C segment so I called. They told me that in order for my wife to get the companion upgrade, I must be upgraded on both flights. The agent confirmed that our trips are linked.
For two separate but linked tickets you will be upgraded at your window and she will be bottom priority to receive and upgrade at T-24. If you were on the same ticket, she would be upgraded with you at your status level. Realistically, she must be on the same (not linked) ticket as you to get an upgrade.