FR 331 then FR 831 at Dublin
London Luton → Dublin → Venezia
Timetable, Dublin time
14:25FR 331 from London Luton at the gate
09:20FR 831 to Venezia leaves the gate
18 h 55 apart on the timetable, overnight
FR 831 leaves 18 h 55 after FR 331 arrives on the timetable: more than half a day, so not a connection we count.