AA 1977 then AA 5543 at Charlotte
San Antonio → Charlotte → Pittsburgh
Timetable, Charlotte time
17:10AA 1977 from San Antonio at the gate
08:35AA 5543 to Pittsburgh leaves the gate
15 h 25 apart on the timetable, overnight
AA 5543 leaves 15 h 25 after AA 1977 arrives on the timetable: more than half a day, so not a connection we count.