EI 3403 then FR 1556 at Dublin
Donegal → Dublin → Manchester
Timetable, Dublin time
15:30EI 3403 from Donegal at the gate
13:00FR 1556 to Manchester leaves the gate
21 h 30 apart on the timetable, overnight
FR 1556 leaves 21 h 30 after EI 3403 arrives on the timetable: more than half a day, so not a connection we count.