UA 3908 then AA 2221 at O'Hare
Orlando → Chicago → Charleston (South Carolina)
Timetable, Chicago time
21:38UA 3908 from Orlando at the gate
12:06AA 2221 to Charleston (South Carolina) leaves the gate
14 h 28 apart on the timetable, overnight
AA 2221 leaves 14 h 28 after UA 3908 arrives on the timetable: more than half a day, so not a connection we count.