KL 1574 then DY 3541 at Schiphol
Porto → Amsterdam → Copenhagen
Timetable, Amsterdam time
19:50KL 1574 from Porto at the gate
17:05DY 3541 to Copenhagen leaves the gate
21 h 15 apart on the timetable, overnight
DY 3541 leaves 21 h 15 after KL 1574 arrives on the timetable: more than half a day, so not a connection we count.