FR 2437 then IB 5351 at Madrid
Rome → Madrid → Firenze
Timetable, Madrid time
19:25FR 2437 from Rome at the gate
09:55IB 5351 to Firenze leaves the gatealso QR 5512, VY 6035, AA 8868
14 h 30 apart on the timetable, overnight
IB 5351 leaves 14 h 30 after FR 2437 arrives on the timetable: more than half a day, so not a connection we count.