AA 1659 then AA 5382 at Charlotte
Buffalo → Charlotte → Savannah
Timetable, Charlotte time
07:45AA 1659 from Buffalo at the gate
19:50AA 5382 to Savannah leaves the gate
12 h 05 apart on the timetable
AA 5382 leaves 12 h 05 after AA 1659 arrives on the timetable: more than half a day, so not a connection we count.