SK 768 then SK 2773 at Copenhagen
Prague → Copenhagen → Porto
Timetable, Copenhagen time
11:45SK 768 from Prague at the gate
09:35SK 2773 to Porto leaves the gate
21 h 50 apart on the timetable, overnight
SK 2773 leaves 21 h 50 after SK 768 arrives on the timetable: more than half a day, so not a connection we count.