KL 794 then U2 7925 at Schiphol
São Paulo → Amsterdam → Prague
Timetable, Amsterdam time
05:25KL 794 from São Paulo at the gate
18:20U2 7925 to Prague leaves the gate
12 h 55 apart on the timetable
U2 7925 leaves 12 h 55 after KL 794 arrives on the timetable: more than half a day, so not a connection we count.