CZ 6789 then CZ 3263 at Guangzhou
Haikou → Guangzhou → Dazhou
Timetable, Guangzhou time
13:25CZ 6789 from Haikou at the gate
10:25CZ 3263 to Dazhou leaves the gate
21 h apart on the timetable, overnight
CZ 3263 leaves 21 h after CZ 6789 arrives on the timetable: more than half a day, so not a connection we count.