UA 3501 then AA 431 at O'Hare
Detroit → Chicago → San Antonio
Timetable, Chicago time
06:57UA 3501 from Detroit at the gate
20:59AA 431 to San Antonio leaves the gate
14 h 02 apart on the timetable
AA 431 leaves 14 h 02 after UA 3501 arrives on the timetable: more than half a day, so not a connection we count.