KL 515 then U2 7869 at Schiphol
Dar es Salaam → Amsterdam → Geneva
Timetable, Amsterdam time
07:45KL 515 from Dar es Salaam at the gate
14:10U2 7869 to Geneva leaves the gate
6 h 25 apart on the timetable
The last days
KL 515 and U2 7869 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.