DY 5511 then BA 489 at Barcelona
Copenhagen → Barcelona → London Heathrow
Timetable, Barcelona time
22:45DY 5511 from Copenhagen at the gate
20:10BA 489 to London Heathrow leaves the gate
21 h 25 apart on the timetable, overnight
BA 489 leaves 21 h 25 after DY 5511 arrives on the timetable: more than half a day, so not a connection we count.