AA 3446 then UA 3914 at O'Hare
Columbus (Ohio) → Chicago → Houston
Timetable, Chicago time
07:29AA 3446 from Columbus (Ohio) at the gate
20:30UA 3914 to Houston leaves the gate
13 h 01 apart on the timetable
UA 3914 leaves 13 h 01 after AA 3446 arrives on the timetable: more than half a day, so not a connection we count.