FR 834 then FR 340 at Dublin
Venezia → Dublin → London Luton
Timetable, Dublin time
15:10FR 834 from Venezia at the gate
12:50FR 340 to London Luton leaves the gate
21 h 40 apart on the timetable, overnight
FR 340 leaves 21 h 40 after FR 834 arrives on the timetable: more than half a day, so not a connection we count.