KL 745 then BA 445 at Schiphol
Cartagena → Amsterdam → London Heathrow
Timetable, Amsterdam time
10:45KL 745 from Cartagena at the gate
19:15BA 445 to London Heathrow leaves the gate
8 h 30 apart on the timetable
The last days
KL 745 and BA 445 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.