AA 4198 then UA 5201 at O'Hare
Tri-Cities → Chicago → Milwaukee
Timetable, Chicago time
07:11AA 4198 from Tri-Cities at the gate
20:00UA 5201 to Milwaukee leaves the gate
12 h 49 apart on the timetable
UA 5201 leaves 12 h 49 after AA 4198 arrives on the timetable: more than half a day, so not a connection we count.