AA 3071 then UA 3998 at Charlotte
Baton Rouge → Charlotte → Washington
Timetable, Charlotte time
21:29AA 3071 from Baton Rouge at the gate
19:55UA 3998 to Washington leaves the gate
22 h 26 apart on the timetable, overnight
UA 3998 leaves 22 h 26 after AA 3071 arrives on the timetable: more than half a day, so not a connection we count.