SK 794 then BA 817 at Copenhagen
Nice → Copenhagen → London Heathrow
Timetable, Copenhagen time
21:55SK 794 from Nice at the gate
21:30BA 817 to London Heathrow leaves the gate
23 h 35 apart on the timetable, overnight
BA 817 leaves 23 h 35 after SK 794 arrives on the timetable: more than half a day, so not a connection we count.