FR 7176 then FR 340 at Dublin
Zakynthos → Dublin → London Luton
Timetable, Dublin time
15:50FR 7176 from Zakynthos at the gate
12:50FR 340 to London Luton leaves the gate
21 h apart on the timetable, overnight
FR 340 leaves 21 h after FR 7176 arrives on the timetable: more than half a day, so not a connection we count.