AA 1741 then UA 5201 at O'Hare
Sacramento → Chicago → Milwaukee
Timetable, Chicago time
05:00AA 1741 from Sacramento at the gate
20:00UA 5201 to Milwaukee leaves the gate
15 h apart on the timetable
UA 5201 leaves 15 h after AA 1741 arrives on the timetable: more than half a day, so not a connection we count.