Originally Posted by
CPH-Flyer
ETA:
It is actually pretty clear
Earn Avios and Qpoints when flying on Malaysia Airlines marketed* flights that are operated** by any oneworld carrier and oneworld affiliates
OK, that sounds like a "no" for MH-marketed but SQ-operated flights, but it also seems like a "no" for Firefly, which does not appear to be a oneworld "affiliate".
But for lounge access, I'll see what I can find out.
For trips to Malaysia, I would usually just use MH if I have some time on my hands, as it involves a connection in KUL. But sometimes I don't, and have to choose from the direct options . . .
Many thanks!