UA 915 then U2 4541 at Charles de Gaulle
Washington → Paris → Milan
Timetable, Paris time
06:55UA 915 from Washington at the gate
06:00U2 4541 to Milan leaves the gate
23 h 05 apart on the timetable, overnight
U2 4541 leaves 23 h 05 after UA 915 arrives on the timetable: more than half a day, so not a connection we count.