AA 5340 then UA 4405 at O'Hare
Knoxville → Chicago → Springfield Branson National
Timetable, Chicago time
09:10AA 5340 from Knoxville at the gate
21:20UA 4405 to Springfield Branson National leaves the gate
12 h 10 apart on the timetable
UA 4405 leaves 12 h 10 after AA 5340 arrives on the timetable: more than half a day, so not a connection we count.