DY 4151 then BA 817 at Copenhagen
Stockholm → Copenhagen → London Heathrow
Timetable, Copenhagen time
08:10DY 4151 from Stockholm at the gate
21:00BA 817 to London Heathrow leaves the gate
12 h 50 apart on the timetable
BA 817 leaves 12 h 50 after DY 4151 arrives on the timetable: more than half a day, so not a connection we count.