BA 807 then BA 273 at Heathrow
Copenhagen → London → San Diego
Timetable, London time
12:50BA 807 from Copenhagen at the gate
12:45BA 273 to San Diego leaves the gate
23 h 55 apart on the timetable, overnight
BA 273 leaves 23 h 55 after BA 807 arrives on the timetable: more than half a day, so not a connection we count.