DY 5511 then IB 5424 at Barcelona
Copenhagen → Barcelona → London Heathrow
Timetable, Barcelona time
22:45DY 5511 from Copenhagen at the gate
18:45IB 5424 to London Heathrow leaves the gatealso LL 5424, VY 7642, BA 8084
20 h apart on the timetable, overnight
IB 5424 leaves 20 h after DY 5511 arrives on the timetable: more than half a day, so not a connection we count.