9C 8572 then EU 6678 at Pudong
Jeju City → Shanghai → Chengdu
Timetable, Shanghai time
15:059C 8572 from Jeju City at the gate
12:55EU 6678 to Chengdu leaves the gate
21 h 50 apart on the timetable, overnight
EU 6678 leaves 21 h 50 after 9C 8572 arrives on the timetable: more than half a day, so not a connection we count.