EI 749 then EI 3408 at Dublin
Bilbao → Dublin → Donegal
Timetable, Dublin time
20:15EI 749 from Bilbao at the gate
18:50EI 3408 to Donegal leaves the gate
22 h 35 apart on the timetable, overnight
EI 3408 leaves 22 h 35 after EI 749 arrives on the timetable: more than half a day, so not a connection we count.