FR 420 then KL 1573 at Schiphol
Dublin → Amsterdam → Porto
Timetable, Amsterdam time
18:55FR 420 from Dublin at the gate
13:45KL 1573 to Porto leaves the gate
18 h 50 apart on the timetable, overnight
KL 1573 leaves 18 h 50 after FR 420 arrives on the timetable: more than half a day, so not a connection we count.