AA 2603 then UA 6086 at Houston
Chicago → Houston → Shreveport
Timetable, Houston time
10:15AA 2603 from Chicago at the gate
07:00UA 6086 to Shreveport leaves the gate
20 h 45 apart on the timetable, overnight
UA 6086 leaves 20 h 45 after AA 2603 arrives on the timetable: more than half a day, so not a connection we count.