KL 1009 then BA 814 at Heathrow
Amsterdam → London → Copenhagen
Timetable, London time
14:25KL 1009 from Amsterdam at the gate
14:15BA 814 to Copenhagen leaves the gate
23 h 50 apart on the timetable, overnight
BA 814 leaves 23 h 50 after KL 1009 arrives on the timetable: more than half a day, so not a connection we count.