AA 151 then UA 3910 at O'Hare
Paris Charles de Gaulle → Chicago → Chicago Rockford
Timetable, Chicago time
15:50AA 151 from Paris Charles de Gaulle at the gate
05:30UA 3910 to Chicago Rockford leaves the gate
13 h 40 apart on the timetable, overnight
UA 3910 leaves 13 h 40 after AA 151 arrives on the timetable: more than half a day, so not a connection we count.