AA 2376 then UA 6190 at Detroit
Charlotte → Detroit → Washington
Timetable, Detroit time
15:43AA 2376 from Charlotte at the gate
14:45UA 6190 to Washington leaves the gate
23 h 02 apart on the timetable, overnight
UA 6190 leaves 23 h 02 after AA 2376 arrives on the timetable: more than half a day, so not a connection we count.