CZ 650 then 3U 1073 at Guangzhou
Budapest → Guangzhou → Xi'an
Timetable, Guangzhou time
05:30CZ 650 from Budapest at the gate
12:003U 1073 to Xi'an leaves the gate
6 h 30 apart on the timetable
The last days
CZ 650 and 3U 1073 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.