KL 678 then HV 6867 at Schiphol
Calgary → Amsterdam → Athens
Timetable, Amsterdam time
08:25KL 678 from Calgary at the gate
07:00HV 6867 to Athens leaves the gate
22 h 35 apart on the timetable, overnight
HV 6867 leaves 22 h 35 after KL 678 arrives on the timetable: more than half a day, so not a connection we count.