HU 439 then CF 208 at Narita
Beijing → Tokyo → Shanghai
Timetable, Tokyo time
11:55HU 439 from Beijing at the gate
14:24CF 208 to Shanghai leaves the gate
2 h 29 apart on the timetable
The last days
HU 439 and CF 208 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.