BA 206 then BA 930 at Heathrow
Miami → London → Düsseldorf
Timetable, London time
06:45BA 206 from Miami at the gate
06:40BA 930 to Düsseldorf leaves the gate
23 h 55 apart on the timetable, overnight
BA 930 leaves 23 h 55 after BA 206 arrives on the timetable: more than half a day, so not a connection we count.