AA 2742 then UA 3302 at Charlotte
Chicago O'Hare → Charlotte → Rochester
Timetable, Charlotte time
12:09AA 2742 from Chicago O'Hare at the gate
07:30UA 3302 to Rochester leaves the gate
19 h 21 apart on the timetable, overnight
UA 3302 leaves 19 h 21 after AA 2742 arrives on the timetable: more than half a day, so not a connection we count.