KL 1002 then HV 6867 at Schiphol
London Heathrow → Amsterdam → Athens
Timetable, Amsterdam time
11:05KL 1002 from London Heathrow at the gate
07:00HV 6867 to Athens leaves the gate
19 h 55 apart on the timetable, overnight
HV 6867 leaves 19 h 55 after KL 1002 arrives on the timetable: more than half a day, so not a connection we count.