I'm applying reason because we know that a system is being applied to produce the results we are seeing in the search engine - and that system obeys rules. Even if some of those rules are one-off arbitrary ones invented by an angry DL god, we can use reason and analysis to try to discern what the rules are, so we can all be better informed travelers!

If, for example, it turns out that DL is unable or unwilling to ticket available awards with two fully fledged Skyteam partners, that might influence some to credit miles away from them. I know I'd certainly consider it.

Here we have multiple endpoints (to list some of the others that I have tried: CGK-SIN-SGN, DPS-SIN-SGN, CGK-BKK-SGN, LHR-CGK-SGN, CGK-SGN-CDG) that all seem to fail.

I've actually already checked both FB and Korean Air - this was one of the first things I did. Both find the availability and price it properly without issue.