KL 1298 then U2 7927 at Schiphol
Billund → Amsterdam → Prague
Timetable, Amsterdam time
17:30KL 1298 from Billund at the gate
13:10U2 7927 to Prague leaves the gate
19 h 40 apart on the timetable, overnight
U2 7927 leaves 19 h 40 after KL 1298 arrives on the timetable: more than half a day, so not a connection we count.