AA 475 then UA 3914 at O'Hare
Los Angeles → Chicago → Houston
Timetable, Chicago time
06:56AA 475 from Los Angeles at the gate
20:30UA 3914 to Houston leaves the gate
13 h 34 apart on the timetable
UA 3914 leaves 13 h 34 after AA 475 arrives on the timetable: more than half a day, so not a connection we count.