UA 5552 then AA 3484 at O'Hare
Traverse City → Chicago → St Louis
Timetable, Chicago time
11:32UA 5552 from Traverse City at the gate
09:30AA 3484 to St Louis leaves the gate
21 h 58 apart on the timetable, overnight
AA 3484 leaves 21 h 58 after UA 5552 arrives on the timetable: more than half a day, so not a connection we count.