CZ 668 then ZH 9673 at Guangzhou
Belgrade → Guangzhou → Harbin
Timetable, Guangzhou time
05:00CZ 668 from Belgrade at the gate
11:30ZH 9673 to Harbin leaves the gate
6 h 30 apart on the timetable
The last days
CZ 668 and ZH 9673 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.