FR 1557 then FR 255 at Dublin
Manchester → Dublin → London Stansted
Timetable, Dublin time
15:25FR 1557 from Manchester at the gate
09:00FR 255 to London Stansted leaves the gate
17 h 35 apart on the timetable, overnight
FR 255 leaves 17 h 35 after FR 1557 arrives on the timetable: more than half a day, so not a connection we count.