AA 1309 then UA 4772 at O'Hare
Puerto Vallarta → Chicago → Columbia Regional
Timetable, Chicago time
18:04AA 1309 from Puerto Vallarta at the gate
12:45UA 4772 to Columbia Regional leaves the gate
18 h 41 apart on the timetable, overnight
UA 4772 leaves 18 h 41 after AA 1309 arrives on the timetable: more than half a day, so not a connection we count.