FR 557 then FR 5306 at Dublin
Manchester → Dublin → Killarney
Timetable, Dublin time
19:15FR 557 from Manchester at the gate
16:15FR 5306 to Killarney leaves the gate
21 h apart on the timetable, overnight
FR 5306 leaves 21 h after FR 557 arrives on the timetable: more than half a day, so not a connection we count.