BA 423 then BA 814 at Heathrow
Málaga → London → Copenhagen
Timetable, London time
14:45BA 423 from Málaga at the gate
14:25BA 814 to Copenhagen leaves the gate
23 h 40 apart on the timetable, overnight
BA 814 leaves 23 h 40 after BA 423 arrives on the timetable: more than half a day, so not a connection we count.