EU 6677 then MU 5437 at Pudong
Chengdu → Shanghai → Kunming
Timetable, Shanghai time
20:00EU 6677 from Chengdu at the gate
14:50MU 5437 to Kunming leaves the gate
18 h 50 apart on the timetable, overnight
MU 5437 leaves 18 h 50 after EU 6677 arrives on the timetable: more than half a day, so not a connection we count.