DL 256 then HV 6867 at Schiphol
Boston → Amsterdam → Athens
Timetable, Amsterdam time
08:15DL 256 from Boston at the gate
07:00HV 6867 to Athens leaves the gate
22 h 45 apart on the timetable, overnight
HV 6867 leaves 22 h 45 after DL 256 arrives on the timetable: more than half a day, so not a connection we count.