AA 3111 then UA 5196 at O'Hare
St Louis → Chicago → Macon
Timetable, Chicago time
13:00AA 3111 from St Louis at the gate
12:00UA 5196 to Macon leaves the gate
23 h apart on the timetable, overnight
UA 5196 leaves 23 h after AA 3111 arrives on the timetable: more than half a day, so not a connection we count.