AA 4706 then UA 3376 at O'Hare
Charlottesville → Chicago → St Louis
Timetable, Chicago time
19:48AA 4706 from Charlottesville at the gate
11:00UA 3376 to St Louis leaves the gate
15 h 12 apart on the timetable, overnight
UA 3376 leaves 15 h 12 after AA 4706 arrives on the timetable: more than half a day, so not a connection we count.