A3 630 then FR 255 at Dublin
Athens → Dublin → London Stansted
Timetable, Dublin time
11:20A3 630 from Athens at the gate
08:30FR 255 to London Stansted leaves the gate
21 h 10 apart on the timetable, overnight
FR 255 leaves 21 h 10 after A3 630 arrives on the timetable: more than half a day, so not a connection we count.