I travelled HKG-TPE-KIX and vv. on the same ticket and got Club sectors and miles for HKG-TPE, TPE-KIX separately.
I would say, since you paid fuel surcharge for each sector, you shall get separate Club miles. You get two separate boarding passes, and your seat is/can be different. Plus, your baggage tag should something like SIN-BKK-HKG as well.
Last edited by mleung89; Jan 27, 2014 at 8:19 am
Reason: Additional information