KL 1270 then U2 7927 at Schiphol
Copenhagen → Amsterdam → Prague
Timetable, Amsterdam time
13:30KL 1270 from Copenhagen at the gate
13:10U2 7927 to Prague leaves the gate
23 h 40 apart on the timetable, overnight
U2 7927 leaves 23 h 40 after KL 1270 arrives on the timetable: more than half a day, so not a connection we count.