DY 3540 then KL 617 at Schiphol
Copenhagen → Amsterdam → Boston
Timetable, Amsterdam time
20:20DY 3540 from Copenhagen at the gate
17:10KL 617 to Boston leaves the gate
20 h 50 apart on the timetable, overnight
KL 617 leaves 20 h 50 after DY 3540 arrives on the timetable: more than half a day, so not a connection we count.