AA 3734 then UA 5201 at O'Hare
Lansing → Chicago → Milwaukee
Timetable, Chicago time
06:05AA 3734 from Lansing at the gate
20:00UA 5201 to Milwaukee leaves the gate
13 h 55 apart on the timetable
UA 5201 leaves 13 h 55 after AA 3734 arrives on the timetable: more than half a day, so not a connection we count.