FM 9540 then EU 6678 at Pudong
Sanya → Shanghai → Chengdu
Timetable, Shanghai time
16:05FM 9540 from Sanya at the gate
12:55EU 6678 to Chengdu leaves the gate
20 h 50 apart on the timetable, overnight
EU 6678 leaves 20 h 50 after FM 9540 arrives on the timetable: more than half a day, so not a connection we count.