Originally Posted by Rice
As long as your companion is on the same PNR, they should enjoy your status when it comes to upgrade priority. I recently had a GA tell me different, but 1K customer service just confirmed that that's still the policy.
Companion has the same priority for upgrade waitlisting if on the same PNR (for advance clearing). However, for airport standby, which was what the GA was refering to, each one is on his/her own.