DL 236 then U2 2172 at Schiphol
Tampa → Amsterdam → Manchester
Timetable, Amsterdam time
08:00DL 236 from Tampa at the gate
14:55U2 2172 to Manchester leaves the gate
6 h 55 apart on the timetable
The last days
DL 236 and U2 2172 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.