EU 6677 then CA 8573 at Pudong
Chengdu → Shanghai → Haikou
Timetable, Shanghai time
20:00EU 6677 from Chengdu at the gate
15:30CA 8573 to Haikou leaves the gate
19 h 30 apart on the timetable, overnight
CA 8573 leaves 19 h 30 after EU 6677 arrives on the timetable: more than half a day, so not a connection we count.