IB 713 then BA 932 at Heathrow
Madrid → London → Düsseldorf
Timetable, London time
09:15IB 713 from Madrid at the gate
08:40BA 932 to Düsseldorf leaves the gate
23 h 25 apart on the timetable, overnight
BA 932 leaves 23 h 25 after IB 713 arrives on the timetable: more than half a day, so not a connection we count.