IB 409 then LA 5746 at Barcelona
Madrid → Barcelona → Firenze
Timetable, Barcelona time
11:45IB 409 from Madrid at the gatealso LA 1624, CX 1827, LL 3009, VY 5116, AV 6078, BA 7129, QR 7246, AA 8727
10:45LA 5746 to Firenze leaves the gate
23 h apart on the timetable, overnight
LA 5746 leaves 23 h after IB 409 arrives on the timetable: more than half a day, so not a connection we count.