AA 899 then UA 3914 at O'Hare
Los Angeles → Chicago → Houston
Timetable, Chicago time
06:00AA 899 from Los Angeles at the gate
20:30UA 3914 to Houston leaves the gate
14 h 30 apart on the timetable
UA 3914 leaves 14 h 30 after AA 899 arrives on the timetable: more than half a day, so not a connection we count.