HU 7610 then HU 4321 at Beijing
Shanghai Hongqiao → Beijing → Haikou
Timetable, Beijing time
23:15HU 7610 from Shanghai Hongqiao at the gate
22:30HU 4321 to Haikou leaves the gate
23 h 15 apart on the timetable, overnight
HU 4321 leaves 23 h 15 after HU 7610 arrives on the timetable: more than half a day, so not a connection we count.