BA 933 then BA 892 at Heathrow
Düsseldorf → London → Sofia
Timetable, London time
15:00BA 933 from Düsseldorf at the gate
13:25BA 892 to Sofia leaves the gate
22 h 25 apart on the timetable, overnight
BA 892 leaves 22 h 25 after BA 933 arrives on the timetable: more than half a day, so not a connection we count.