FR 80 then SK 793 at Copenhagen
Budapest → Copenhagen → Nice
Timetable, Copenhagen time
19:40FR 80 from Budapest at the gate
08:25SK 793 to Nice leaves the gate
12 h 45 apart on the timetable, overnight
SK 793 leaves 12 h 45 after FR 80 arrives on the timetable: more than half a day, so not a connection we count.