AA 3139 then AA 5787 at Charlotte
Philadelphia → Charlotte → Chattanooga
Timetable, Charlotte time
07:52AA 3139 from Philadelphia at the gate
20:30AA 5787 to Chattanooga leaves the gate
12 h 38 apart on the timetable
AA 5787 leaves 12 h 38 after AA 3139 arrives on the timetable: more than half a day, so not a connection we count.