AA 5104 then AA 1331 at Charlotte
South Bend → Charlotte → Washington National
Timetable, Charlotte time
08:20AA 5104 from South Bend at the gate
20:25AA 1331 to Washington National leaves the gate
12 h 05 apart on the timetable
AA 1331 leaves 12 h 05 after AA 5104 arrives on the timetable: more than half a day, so not a connection we count.