BA 933 then BA 868 at Heathrow
Düsseldorf → London → Budapest
Timetable, London time
13:05BA 933 from Düsseldorf at the gate
13:00BA 868 to Budapest leaves the gate
23 h 55 apart on the timetable, overnight
BA 868 leaves 23 h 55 after BA 933 arrives on the timetable: more than half a day, so not a connection we count.