CZ 668 then CZ 6575 at Guangzhou
Belgrade → Guangzhou → Zhengzhou
Timetable, Guangzhou time
05:00CZ 668 from Belgrade at the gate
09:20CZ 6575 to Zhengzhou leaves the gate
4 h 20 apart on the timetable
The last days
CZ 668 and CZ 6575 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.