SK 602 then SK 2773 at Copenhagen
Zurich → Copenhagen → Porto
Timetable, Copenhagen time
12:15SK 602 from Zurich at the gate
09:35SK 2773 to Porto leaves the gate
21 h 20 apart on the timetable, overnight
SK 2773 leaves 21 h 20 after SK 602 arrives on the timetable: more than half a day, so not a connection we count.