BA 813 then BA 822 at Heathrow
Copenhagen → London → Billund
Timetable, London time
16:55BA 813 from Copenhagen at the gate
16:05BA 822 to Billund leaves the gate
23 h 10 apart on the timetable, overnight
BA 822 leaves 23 h 10 after BA 813 arrives on the timetable: more than half a day, so not a connection we count.