FR 3976 then EI 3402 at Dublin
Barcelona → Dublin → Donegal
Timetable, Dublin time
21:25FR 3976 from Barcelona at the gate
12:55EI 3402 to Donegal leaves the gate
15 h 30 apart on the timetable, overnight
EI 3402 leaves 15 h 30 after FR 3976 arrives on the timetable: more than half a day, so not a connection we count.