FR 21 then FR 3568 at Dublin
Newcastle → Dublin → Santiago de Compostela
Timetable, Dublin time
23:10FR 21 from Newcastle at the gate
18:50FR 3568 to Santiago de Compostela leaves the gate
19 h 40 apart on the timetable, overnight
FR 3568 leaves 19 h 40 after FR 21 arrives on the timetable: more than half a day, so not a connection we count.