BR 2722 then BR 752 at Taipei
Guangzhou → Taipei → Shanghai
Timetable, Taipei time
10:00BR 2722 from Guangzhou at the gatealso HU 7981
12:35BR 752 to Shanghai leaves the gate
2 h 35 apart on the timetable
The last days
BR 2722 and BR 752 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.