KL 9864 then KL 1009 at Schiphol
Brussels → Amsterdam → London Heathrow
Timetable, Amsterdam time
13:32KL 9864 from Brussels at the gate
13:30KL 1009 to London Heathrow leaves the gate
23 h 58 apart on the timetable, overnight
KL 1009 leaves 23 h 58 after KL 9864 arrives on the timetable: more than half a day, so not a connection we count.