FR 553 then EI 3216 at Dublin
Manchester → Dublin → Castletown
Timetable, Dublin time
19:45FR 553 from Manchester at the gate
16:00EI 3216 to Castletown leaves the gate
20 h 15 apart on the timetable, overnight
EI 3216 leaves 20 h 15 after FR 553 arrives on the timetable: more than half a day, so not a connection we count.