ZH 9535 then EU 6678 at Pudong
Guangzhou → Shanghai → Chengdu
Timetable, Shanghai time
17:45ZH 9535 from Guangzhou at the gate
12:55EU 6678 to Chengdu leaves the gate
19 h 10 apart on the timetable, overnight
EU 6678 leaves 19 h 10 after ZH 9535 arrives on the timetable: more than half a day, so not a connection we count.