LM 51 then EI 3402 at Dublin
Aberdeen → Dublin → Donegal
Timetable, Dublin time
20:15LM 51 from Aberdeen at the gate
12:55EI 3402 to Donegal leaves the gate
16 h 40 apart on the timetable, overnight
EI 3402 leaves 16 h 40 after LM 51 arrives on the timetable: more than half a day, so not a connection we count.