OZ 365 then EU 6678 at Pudong
Seoul → Shanghai → Chengdu
Timetable, Shanghai time
15:10OZ 365 from Seoul at the gate
12:55EU 6678 to Chengdu leaves the gate
21 h 45 apart on the timetable, overnight
EU 6678 leaves 21 h 45 after OZ 365 arrives on the timetable: more than half a day, so not a connection we count.