KL 538 then HV 6867 at Schiphol
Kigali → Amsterdam → Athens
Timetable, Amsterdam time
07:35KL 538 from Kigali at the gate
06:55HV 6867 to Athens leaves the gate
23 h 20 apart on the timetable, overnight
HV 6867 leaves 23 h 20 after KL 538 arrives on the timetable: more than half a day, so not a connection we count.