BA 933 then LH 907 at Heathrow
Düsseldorf → London → Frankfurt am Main
Timetable, London time
15:00BA 933 from Düsseldorf at the gate
13:30LH 907 to Frankfurt am Main leaves the gate
22 h 30 apart on the timetable, overnight
LH 907 leaves 22 h 30 after BA 933 arrives on the timetable: more than half a day, so not a connection we count.