U2 5605 then U2 2518 at Schiphol
Newcastle → Amsterdam → London Luton
Timetable, Amsterdam time
09:20U2 5605 from Newcastle at the gate
15:55U2 2518 to London Luton leaves the gate
6 h 35 apart on the timetable
The last days
U2 5605 and U2 2518 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.