KL 1828 then U2 7815 at Schiphol
Stuttgart → Amsterdam → Venezia
Timetable, Amsterdam time
11:10KL 1828 from Stuttgart at the gate
07:00U2 7815 to Venezia leaves the gate
19 h 50 apart on the timetable, overnight
U2 7815 leaves 19 h 50 after KL 1828 arrives on the timetable: more than half a day, so not a connection we count.