IB 5371 then LA 5771 at Barcelona
Firenze → Barcelona → Rome
Timetable, Barcelona time
11:35IB 5371 from Firenze at the gate
07:10LA 5771 to Rome leaves the gate
19 h 35 apart on the timetable, overnight
LA 5771 leaves 19 h 35 after IB 5371 arrives on the timetable: more than half a day, so not a connection we count.