EI 3403 then FR 556 at Dublin
Donegal → Dublin → Manchester
Timetable, Dublin time
15:30EI 3403 from Donegal at the gate
08:20FR 556 to Manchester leaves the gate
16 h 50 apart on the timetable, overnight
FR 556 leaves 16 h 50 after EI 3403 arrives on the timetable: more than half a day, so not a connection we count.