CZ 3364 then MF 3728 at Guangzhou
Luoyang → Guangzhou → Shanghai Hongqiao
Timetable, Guangzhou time
12:55CZ 3364 from Luoyang at the gate
17:30MF 3728 to Shanghai Hongqiao leaves the gatealso 3U 5188
4 h 35 apart on the timetable
The last days
CZ 3364 and MF 3728 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.