CZ 6785 then HU 7233 at Guangzhou
Haikou → Guangzhou → Ningbo
Timetable, Guangzhou time
10:25CZ 6785 from Haikou at the gate
07:25HU 7233 to Ningbo leaves the gate
21 h apart on the timetable, overnight
HU 7233 leaves 21 h after CZ 6785 arrives on the timetable: more than half a day, so not a connection we count.