CZ 3426 then CA 8348 at Guangzhou
Huangyan → Guangzhou → Shanghai Pudong
Timetable, Guangzhou time
19:05CZ 3426 from Huangyan at the gate
19:55CA 8348 to Shanghai Pudong leaves the gate
50 min apart on the timetable
The last days
CZ 3426 and CA 8348 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.