CZ 6777 then 3U 8206 at Guangzhou
Haikou → Guangzhou → Kunming
Timetable, Guangzhou time
15:25CZ 6777 from Haikou at the gate
10:253U 8206 to Kunming leaves the gate
19 h apart on the timetable, overnight
3U 8206 leaves 19 h after CZ 6777 arrives on the timetable: more than half a day, so not a connection we count.