Originally Posted by SFO_FT

Not surprisingly, SQ will require the use of married segments. I had a supervisor look at segments separately but he was only willing to do this because I used an F award HKG-SIN-SYD but wanted to do a voluntary downgrade to C on the first segment. All regular agents said no -- rules are rules -- no splitting of married segments. However, in your case, because you are making a stopover (ie, 24+ hours), married segments don't apply. Married segments apply to "connections (ie, <24 hours).