CZ 2124 then CA 1796 at Guangzhou
Tianjin → Guangzhou → Hangzhou
Timetable, Guangzhou time
15:40CZ 2124 from Tianjin at the gate
19:45CA 1796 to Hangzhou leaves the gate
4 h 05 apart on the timetable
The last days
CZ 2124 and CA 1796 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.