DY 3658 then BA 483 at Barcelona
Copenhagen → Barcelona → London Heathrow
Timetable, Barcelona time
20:00DY 3658 from Copenhagen at the gate
18:10BA 483 to London Heathrow leaves the gate
22 h 10 apart on the timetable, overnight
BA 483 leaves 22 h 10 after DY 3658 arrives on the timetable: more than half a day, so not a connection we count.