FR 6974 then LA 5792 at Barcelona
Rome → Barcelona → Venezia
Timetable, Barcelona time
22:25FR 6974 from Rome at the gate
19:40LA 5792 to Venezia leaves the gate
21 h 15 apart on the timetable, overnight
LA 5792 leaves 21 h 15 after FR 6974 arrives on the timetable: more than half a day, so not a connection we count.