AA 671 then UA 3916 at O'Hare
Dallas-Fort Worth → Chicago → New Orleans
Timetable, Chicago time
11:02AA 671 from Dallas-Fort Worth at the gate
07:00UA 3916 to New Orleans leaves the gate
19 h 58 apart on the timetable, overnight
UA 3916 leaves 19 h 58 after AA 671 arrives on the timetable: more than half a day, so not a connection we count.