Thought I'd hijack this thread rather than start a new one with the same title. Simple question, would the folowing routing be allowed bearing in mind there is some backtracking involved:

OSL-BKK-SIN (stopover)-HKG

Pretty much the only available routing to SIN in Biz class on my prefered date is using the TG flight from OSL.

So, what do you think, permissable or the kind of routing where you are praying Trupti answers?