KL 1007 then BA 1490 at Heathrow
Amsterdam → London → Glasgow
Timetable, London time
12:05KL 1007 from Amsterdam at the gate
18:10BA 1490 to Glasgow leaves the gate
6 h 05 apart on the timetable
The last days
KL 1007 and BA 1490 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.