IB 421 then LA 5765 at Barcelona
Madrid → Barcelona → Firenze
Timetable, Barcelona time
19:15IB 421 from Madrid at the gatealso LL 3021, VY 5122, AV 6170, QR 6971
15:40LA 5765 to Firenze leaves the gate
20 h 25 apart on the timetable, overnight
LA 5765 leaves 20 h 25 after IB 421 arrives on the timetable: more than half a day, so not a connection we count.