FR 421 then FR 255 at Dublin
Amsterdam → Dublin → London Stansted
Timetable, Dublin time
20:00FR 421 from Amsterdam at the gate
08:30FR 255 to London Stansted leaves the gate
12 h 30 apart on the timetable, overnight
FR 255 leaves 12 h 30 after FR 421 arrives on the timetable: more than half a day, so not a connection we count.