KL 1578 then U2 7815 at Schiphol
Lisbon → Amsterdam → Venezia
Timetable, Amsterdam time
09:00KL 1578 from Lisbon at the gate
07:00U2 7815 to Venezia leaves the gate
22 h apart on the timetable, overnight
U2 7815 leaves 22 h after KL 1578 arrives on the timetable: more than half a day, so not a connection we count.