EI 3403 then FR 457 at Dublin
Donegal → Dublin → Leeds
Timetable, Dublin time
15:30EI 3403 from Donegal at the gate
13:05FR 457 to Leeds leaves the gate
21 h 35 apart on the timetable, overnight
FR 457 leaves 21 h 35 after EI 3403 arrives on the timetable: more than half a day, so not a connection we count.