KL 48 then KL 1617 at Schiphol
Chicago → Amsterdam → Milan Linate
Timetable, Amsterdam time
06:39KL 48 from Chicago at the gate
18:45KL 1617 to Milan Linate leaves the gate
12 h 06 apart on the timetable
KL 1617 leaves 12 h 06 after KL 48 arrives on the timetable: more than half a day, so not a connection we count.