CZ 3605 then 9C 8856 at Guangzhou
Yanji → Guangzhou → Shanghai Hongqiao
Timetable, Guangzhou time
18:55CZ 3605 from Yanji at the gate
18:059C 8856 to Shanghai Hongqiao leaves the gate
23 h 10 apart on the timetable, overnight
9C 8856 leaves 23 h 10 after CZ 3605 arrives on the timetable: more than half a day, so not a connection we count.