FR 3976 then FR 1454 at Dublin
Barcelona → Dublin → Milan
Timetable, Dublin time
21:25FR 3976 from Barcelona at the gate
10:10FR 1454 to Milan leaves the gate
12 h 45 apart on the timetable, overnight
FR 1454 leaves 12 h 45 after FR 3976 arrives on the timetable: more than half a day, so not a connection we count.