UA 3501 then AA 3222 at O'Hare
Detroit → Chicago → Baltimore
Timetable, Chicago time
06:57UA 3501 from Detroit at the gate
21:00AA 3222 to Baltimore leaves the gate
14 h 03 apart on the timetable
AA 3222 leaves 14 h 03 after UA 3501 arrives on the timetable: more than half a day, so not a connection we count.