KL 9864 then BA 431 at Schiphol
Brussels → Amsterdam → London Heathrow
Timetable, Amsterdam time
13:32KL 9864 from Brussels at the gate
10:00BA 431 to London Heathrow leaves the gate
20 h 28 apart on the timetable, overnight
BA 431 leaves 20 h 28 after KL 9864 arrives on the timetable: more than half a day, so not a connection we count.