KL 571 then U2 7871 at Schiphol
Dar es Salaam → Amsterdam → Birmingham (UK)
Timetable, Amsterdam time
07:40KL 571 from Dar es Salaam at the gate
11:55U2 7871 to Birmingham (UK) leaves the gate
4 h 15 apart on the timetable
The last days
KL 571 and U2 7871 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.