CZ 3605 then ZH 9983 at Guangzhou
Yanji → Guangzhou → Hangzhou
Timetable, Guangzhou time
18:55CZ 3605 from Yanji at the gate
18:20ZH 9983 to Hangzhou leaves the gate
23 h 25 apart on the timetable, overnight
ZH 9983 leaves 23 h 25 after CZ 3605 arrives on the timetable: more than half a day, so not a connection we count.