FR 338 then A3 631 at Dublin
London Luton → Dublin → Athens
Timetable, Dublin time
20:55FR 338 from London Luton at the gate
12:10A3 631 to Athens leaves the gate
15 h 15 apart on the timetable, overnight
A3 631 leaves 15 h 15 after FR 338 arrives on the timetable: more than half a day, so not a connection we count.