DL 2157 then AA 5543 at Charlotte
Atlanta (ATL) → Charlotte → Pittsburgh
Timetable, Charlotte time
13:32DL 2157 from Atlanta (ATL) at the gate
08:35AA 5543 to Pittsburgh leaves the gate
19 h 03 apart on the timetable, overnight
AA 5543 leaves 19 h 03 after DL 2157 arrives on the timetable: more than half a day, so not a connection we count.