BA 630 then SK 778 at Athens
London Heathrow → Athens → Copenhagen
Timetable, Athens time
14:00BA 630 from London Heathrow at the gate
13:30SK 778 to Copenhagen leaves the gate
23 h 30 apart on the timetable, overnight
SK 778 leaves 23 h 30 after BA 630 arrives on the timetable: more than half a day, so not a connection we count.