AA 5399 then AA 1153 at Charlotte
South Bend → Charlotte → San Antonio
Timetable, Charlotte time
08:14AA 5399 from South Bend at the gate
20:44AA 1153 to San Antonio leaves the gate
12 h 30 apart on the timetable
AA 1153 leaves 12 h 30 after AA 5399 arrives on the timetable: more than half a day, so not a connection we count.