EI 991 then EI 3326 at Dublin
Rome → Dublin → Manchester
Timetable, Dublin time
02:00EI 991 from Rome at the gate
17:30EI 3326 to Manchester leaves the gate
15 h 30 apart on the timetable
EI 3326 leaves 15 h 30 after EI 991 arrives on the timetable: more than half a day, so not a connection we count.