SK 768 then DY 3640 at Copenhagen
Prague → Copenhagen → Nice
Timetable, Copenhagen time
11:45SK 768 from Prague at the gate
08:00DY 3640 to Nice leaves the gate
20 h 15 apart on the timetable, overnight
DY 3640 leaves 20 h 15 after SK 768 arrives on the timetable: more than half a day, so not a connection we count.