FR 3976 then FR 1740 at Dublin
Barcelona → Dublin → Valencia
Timetable, Dublin time
08:25FR 3976 from Barcelona at the gate
06:20FR 1740 to Valencia leaves the gate
21 h 55 apart on the timetable, overnight
FR 1740 leaves 21 h 55 after FR 3976 arrives on the timetable: more than half a day, so not a connection we count.