IB 5375 then FR 6874 at Barcelona
Firenze → Barcelona → Dublin
Timetable, Barcelona time
17:55IB 5375 from Firenze at the gatealso LL 5375, VY 6075
10:20FR 6874 to Dublin leaves the gate
16 h 25 apart on the timetable, overnight
FR 6874 leaves 16 h 25 after IB 5375 arrives on the timetable: more than half a day, so not a connection we count.