KL 9956 then KL 987 at Schiphol
Brussels → Amsterdam → London City
Timetable, Amsterdam time
07:50KL 9956 from Brussels at the gate
13:05KL 987 to London City leaves the gate
5 h 15 apart on the timetable
The last days
KL 9956 and KL 987 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.