MU 5342 then EU 6678 at Pudong
Shenzhen → Shanghai → Chengdu
Timetable, Shanghai time
15:20MU 5342 from Shenzhen at the gate
12:55EU 6678 to Chengdu leaves the gate
21 h 35 apart on the timetable, overnight
EU 6678 leaves 21 h 35 after MU 5342 arrives on the timetable: more than half a day, so not a connection we count.