BA 630 then KL 1954 at Athens
London Heathrow → Athens → Amsterdam
Timetable, Athens time
14:00BA 630 from London Heathrow at the gate
13:45KL 1954 to Amsterdam leaves the gate
23 h 45 apart on the timetable, overnight
KL 1954 leaves 23 h 45 after BA 630 arrives on the timetable: more than half a day, so not a connection we count.