MF 2921 then BA 444 at Heathrow
Xiamen → London → Amsterdam
Timetable, London time
10:30MF 2921 from Xiamen at the gate
16:25BA 444 to Amsterdam leaves the gate
5 h 55 apart on the timetable
The last days
MF 2921 and BA 444 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.