IB 5375 then FR 3976 at Barcelona
Firenze → Barcelona → Dublin
Timetable, Barcelona time
16:55IB 5375 from Firenze at the gatealso LL 5375, VY 6075
11:45FR 3976 to Dublin leaves the gate
18 h 50 apart on the timetable, overnight
FR 3976 leaves 18 h 50 after IB 5375 arrives on the timetable: more than half a day, so not a connection we count.