AA 2576 then UA 6060 at O'Hare
Charlotte → Chicago → Lancaster
Timetable, Chicago time
20:11AA 2576 from Charlotte at the gate
16:55UA 6060 to Lancaster leaves the gate
20 h 44 apart on the timetable, overnight
UA 6060 leaves 20 h 44 after AA 2576 arrives on the timetable: more than half a day, so not a connection we count.