FR 21 then FR 676 at Dublin
Newcastle → Dublin → Cardiff
Timetable, Dublin time
23:55FR 21 from Newcastle at the gate
22:25FR 676 to Cardiff leaves the gate
22 h 30 apart on the timetable, overnight
FR 676 leaves 22 h 30 after FR 21 arrives on the timetable: more than half a day, so not a connection we count.