MU 546 then MU 581 at Pudong
Singapore → Shanghai → Vancouver
Timetable, Shanghai time
15:15MU 546 from Singapore at the gate
13:40MU 581 to Vancouver leaves the gate
22 h 25 apart on the timetable, overnight
MU 581 leaves 22 h 25 after MU 546 arrives on the timetable: more than half a day, so not a connection we count.