I appreciate the replies, I will not cry over one of the segments from HKG-SIN not crediting as it only has an effect on the outbound as the flights home are well timed for my needs, but to be able to pick up 6-7 hours on the ground in SIN will help me to need one less day away from home. But OTOH the 12 hour layover in HKG will allow for a quick trip into town for some dim sum and a nice stretch of the legs before the relatively quick hop to SIN.