Serious 1st World problem - conf on 831 77W PVG-SIN morrow dep 13:30 - just had WL clear 833 on 380 dep 16:40 - bit over 4hrs TPR / Changi terminal compared to 1.5hrs - and that if t dep on time - no brainer if R a novelty but done it so often and 5hr flt only - what to do?
You've been through Changai that many times I'd be taking the SQ833 with the short layover and onto MEL. Might get lucky and go straight from one plane to another.