AA 1757 then UA 6203 at Charlotte
Milwaukee → Charlotte → Washington
Timetable, Charlotte time
21:34AA 1757 from Milwaukee at the gate
15:05UA 6203 to Washington leaves the gate
17 h 31 apart on the timetable, overnight
UA 6203 leaves 17 h 31 after AA 1757 arrives on the timetable: more than half a day, so not a connection we count.