CZ 3382 then CZ 6778 at Guangzhou
Dayong → Guangzhou → Haikou
Timetable, Guangzhou time
23:40CZ 3382 from Dayong at the gate
16:30CZ 6778 to Haikou leaves the gate
16 h 50 apart on the timetable, overnight
CZ 6778 leaves 16 h 50 after CZ 3382 arrives on the timetable: more than half a day, so not a connection we count.