CZ 2128 then CZ 30 at Guangzhou
Shenyang → Guangzhou → Shanghai Hongqiao
Timetable, Guangzhou time
17:30CZ 2128 from Shenyang at the gate
21:15CZ 30 to Shanghai Hongqiao leaves the gatealso CA 3278, MU 3863, 3U 4594, ZH 5202, MF 5750
3 h 45 apart on the timetable
The last days
CZ 2128 and CZ 30 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.