ZH 9868 then CA 8582 at Guangzhou
Nanjing → Guangzhou → Shanghai Pudong
Timetable, Guangzhou time
10:30ZH 9868 from Nanjing at the gate
13:45CA 8582 to Shanghai Pudong leaves the gate
3 h 15 apart on the timetable
The last days
ZH 9868 and CA 8582 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.