FR 879 then IB 5150 at Barcelona
Venezia → Barcelona → Seville
Timetable, Barcelona time
21:10FR 879 from Venezia at the gate
15:45IB 5150 to Seville leaves the gate
18 h 35 apart on the timetable, overnight
IB 5150 leaves 18 h 35 after FR 879 arrives on the timetable: more than half a day, so not a connection we count.