EU 6677 then CZ 6506 at Pudong
Chengdu → Shanghai → Shenyang
Timetable, Shanghai time
20:00EU 6677 from Chengdu at the gate
13:30CZ 6506 to Shenyang leaves the gate
17 h 30 apart on the timetable, overnight
CZ 6506 leaves 17 h 30 after EU 6677 arrives on the timetable: more than half a day, so not a connection we count.