AA 3584 then UA 5191 at O'Hare
Springfield Branson National → Chicago → Lancaster
Timetable, Chicago time
12:22AA 3584 from Springfield Branson National at the gate
08:50UA 5191 to Lancaster leaves the gate
20 h 28 apart on the timetable, overnight
UA 5191 leaves 20 h 28 after AA 3584 arrives on the timetable: more than half a day, so not a connection we count.