AA 1678 then AA 2937 at Charlotte
Phoenix → Charlotte → St Louis
Timetable, Charlotte time
17:17AA 1678 from Phoenix at the gate
16:28AA 2937 to St Louis leaves the gate
23 h 11 apart on the timetable, overnight
AA 2937 leaves 23 h 11 after AA 1678 arrives on the timetable: more than half a day, so not a connection we count.