KL 567 then BA 443 at Schiphol
Dar es Salaam → Amsterdam → London Heathrow
Timetable, Amsterdam time
07:40KL 567 from Dar es Salaam at the gate
18:10BA 443 to London Heathrow leaves the gate
10 h 30 apart on the timetable
The last days
KL 567 and BA 443 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.