Previously I had been able to interline flying QF SYD-SIN, 3K SIN-KUL on separate tickets. Now QF tells me because it's not oneworld I can't do it - but if it's a QF 3K codeshare they can. I find it hard to believe they cannot interline with their own subsidiary. They said this was a recent change in policy. Another QF "enhancement". Fortunately I did have enough time in SIN to be able to get my luggage.