MU 508 then EU 6678 at Pudong
Hong Kong → Shanghai → Chengdu
Timetable, Shanghai time
17:55MU 508 from Hong Kong at the gate
12:55EU 6678 to Chengdu leaves the gate
19 h apart on the timetable, overnight
EU 6678 leaves 19 h after MU 508 arrives on the timetable: more than half a day, so not a connection we count.