FR 7807 then W4 6728 at Barcelona
London Luton → Barcelona → Venezia
Timetable, Barcelona time
09:40FR 7807 from London Luton at the gate
21:50W4 6728 to Venezia leaves the gate
12 h 10 apart on the timetable
W4 6728 leaves 12 h 10 after FR 7807 arrives on the timetable: more than half a day, so not a connection we count.