SK 501 then BA 712 at Heathrow
Copenhagen → London → Zurich
Timetable, London time
09:20SK 501 from Copenhagen at the gate
09:05BA 712 to Zurich leaves the gate
23 h 45 apart on the timetable, overnight
BA 712 leaves 23 h 45 after SK 501 arrives on the timetable: more than half a day, so not a connection we count.