I have a flight from SGN to SIN (SQ185) and are connecting to LHR (SQ322). Arriving in SIN 22:40 and LHR flight depart at 2330. That makes the connection 50 min. The reason I want to catch the 2330 flight is mainly because of A380 and UD economy. There is a later flight to LHR (SQ306) at 0110, but with an 77W and unsure if it is deployed with the new economy cabin. Not sure where the SGN flight would park in T2 or T3, but the LHR will depart from T3. Would 50 min connection in the evening be possible?