EU 6677 then SQ 833 at Pudong
Chengdu → Shanghai → Singapore
Timetable, Shanghai time
20:00EU 6677 from Chengdu at the gate
16:25SQ 833 to Singapore leaves the gate
20 h 25 apart on the timetable, overnight
SQ 833 leaves 20 h 25 after EU 6677 arrives on the timetable: more than half a day, so not a connection we count.