EU 6677 then CZ 5972 at Pudong
Chengdu → Shanghai → Shantou
Timetable, Shanghai time
20:00EU 6677 from Chengdu at the gate
19:15CZ 5972 to Shantou leaves the gate
23 h 15 apart on the timetable, overnight
CZ 5972 leaves 23 h 15 after EU 6677 arrives on the timetable: more than half a day, so not a connection we count.