AA 882 then UA 3914 at O'Hare
Dallas-Fort Worth → Chicago → Houston
Timetable, Chicago time
23:59AA 882 from Dallas-Fort Worth at the gate
20:30UA 3914 to Houston leaves the gate
20 h 31 apart on the timetable, overnight
UA 3914 leaves 20 h 31 after AA 882 arrives on the timetable: more than half a day, so not a connection we count.