FR 291 then FR 3568 at Dublin
London Stansted → Dublin → Santiago de Compostela
Timetable, Dublin time
21:00FR 291 from London Stansted at the gate
18:50FR 3568 to Santiago de Compostela leaves the gate
21 h 50 apart on the timetable, overnight
FR 3568 leaves 21 h 50 after FR 291 arrives on the timetable: more than half a day, so not a connection we count.