Originally Posted by
FlyFreakquently
Right, linking just means a note in the remarks, hence why I put it in scare quotes. However, I was trying to get MCE for a non-status companion as well as give them my upgrade priority. I just wasn't sure if you could do that if the companion was ticketed in basic economy.
This is what you're probably looking for:
Companion upgrade issues including "link" / split PNR for status etc. (master thread)