AA 4523 then AA 3561 at O'Hare
Baltimore → Chicago → Little Rock
Timetable, Chicago time
20:00AA 4523 from Baltimore at the gate
19:59AA 3561 to Little Rock leaves the gate
23 h 59 apart on the timetable, overnight
AA 3561 leaves 23 h 59 after AA 4523 arrives on the timetable: more than half a day, so not a connection we count.