Originally Posted by
SingaBear
The key is not the separate PNRs, but the baggage interline agreements. You will need to check with the airlines involved to see if they will interline your bags...
This is true and correct. I just did SQ SIN-BKK and CI BKK-TPE on two separate PNRs with my bag checked all the way through to TPE from SIN. Before the trip, both SQ and CI were informed of my different PNRs. Both were able to see my routing and acted accordingly in SIN and BKK.
Originally Posted by
SingaBear
...If you have long layovers, you may also want to ask how that will affect you. I once had an airline refuse to receive my interlined bags because my layover, while less than 24 hours, was over a calendar day. This was despite the fact that there existed an interline baggage agreement. That was not fun.
This is also true. It's always a good idea to check beforehand with the airlines involved.