FR 3976 then FR 328 at Dublin
Barcelona → Dublin → Bucharest
Timetable, Dublin time
14:40FR 3976 from Barcelona at the gate
14:30FR 328 to Bucharest leaves the gate
23 h 50 apart on the timetable, overnight
FR 328 leaves 23 h 50 after FR 3976 arrives on the timetable: more than half a day, so not a connection we count.