AA 2710 then UA 4772 at O'Hare
Phoenix → Chicago → Columbia Regional
Timetable, Chicago time
16:09AA 2710 from Phoenix at the gate
12:45UA 4772 to Columbia Regional leaves the gate
20 h 36 apart on the timetable, overnight
UA 4772 leaves 20 h 36 after AA 2710 arrives on the timetable: more than half a day, so not a connection we count.