EU 6677 then CZ 3317 at Pudong
Chengdu → Shanghai → Shantou
Timetable, Shanghai time
20:00EU 6677 from Chengdu at the gate
18:15CZ 3317 to Shantou leaves the gate
22 h 15 apart on the timetable, overnight
CZ 3317 leaves 22 h 15 after EU 6677 arrives on the timetable: more than half a day, so not a connection we count.