UA 3762 then AA 2148 at O'Hare
Manhattan → Chicago → Charlotte
Timetable, Chicago time
22:41UA 3762 from Manhattan at the gate
18:49AA 2148 to Charlotte leaves the gate
20 h 08 apart on the timetable, overnight
AA 2148 leaves 20 h 08 after UA 3762 arrives on the timetable: more than half a day, so not a connection we count.