Thought EY didn't have 1st to/from Thailand.
Have been trying to book CAI-BOM/BKK-CAI but no 1st on return.
FYI, Residence fare from CAI-BOM only about $2,400 ow/$3,800 RT and includes real 1st in 653/654 between CAI & AUH and the Residence from AUH-BOM - can't figure out a way to make it any cheaper.
Best scenario is open-jaw that gets half of the $3,800 & half of something else (e.g. half of approx $1,250 if came back from BKK in biz).
EY sucks tho trying to get the fare (in any type of open jaw). Can't do online and reps that auto-price won't find it. You have to tell them to build it manually.