AA 3421 then UA 5201 at O'Hare
Mosinee → Chicago → Milwaukee
Timetable, Chicago time
07:29AA 3421 from Mosinee at the gate
20:00UA 5201 to Milwaukee leaves the gate
12 h 31 apart on the timetable
UA 5201 leaves 12 h 31 after AA 3421 arrives on the timetable: more than half a day, so not a connection we count.