EC 2124 then U2 713 at Manchester
Rome → Manchester → Belfast City
Timetable, Manchester time
09:50EC 2124 from Rome at the gate
14:25U2 713 to Belfast City leaves the gate
4 h 35 apart on the timetable
The last days
EC 2124 and U2 713 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.