FR 2437 then IB 683 at Madrid
Rome → Madrid → Venezia
Timetable, Madrid time
09:00FR 2437 from Rome at the gate
21:30IB 683 to Venezia leaves the gate
12 h 30 apart on the timetable
IB 683 leaves 12 h 30 after FR 2437 arrives on the timetable: more than half a day, so not a connection we count.