AA 1204 then UA 6047 at O'Hare
Miami → Chicago → Milwaukee
Timetable, Chicago time
07:42AA 1204 from Miami at the gate
19:47UA 6047 to Milwaukee leaves the gate
12 h 05 apart on the timetable
UA 6047 leaves 12 h 05 after AA 1204 arrives on the timetable: more than half a day, so not a connection we count.