CZ 2544 then MF 8312 at Guangzhou
New York JFK → Guangzhou → Hangzhou
Timetable, Guangzhou time
14:55CZ 2544 from New York JFK at the gate
21:15MF 8312 to Hangzhou leaves the gate
6 h 20 apart on the timetable
The last days
CZ 2544 and MF 8312 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.