EI 3393 then FR 255 at Dublin
Leeds → Dublin → London Stansted
Timetable, Dublin time
17:00EI 3393 from Leeds at the gate
08:30FR 255 to London Stansted leaves the gate
15 h 30 apart on the timetable, overnight
FR 255 leaves 15 h 30 after EI 3393 arrives on the timetable: more than half a day, so not a connection we count.