IB 5371 then FR 6920 at Barcelona
Firenze → Barcelona → Dublin
Timetable, Barcelona time
11:35IB 5371 from Firenze at the gate
06:20FR 6920 to Dublin leaves the gate
18 h 45 apart on the timetable, overnight
FR 6920 leaves 18 h 45 after IB 5371 arrives on the timetable: more than half a day, so not a connection we count.