On the same general topic, I've got a flight to Melbourne from Dublin via BKK, and coming back the same way. There are 2 booking references on the electronic ticket email; one for the SAS (2 legs outbound, 3 back) and 1 for Thai (final leg outbound).
I'm assuming that because I have 17 hours in BKK on the way out, I will have to pick up the bags even if there is a transit hotel airside particularly as I'm changing airline?
On the way back, its SAS all the way, so there should be no problem.