AA 3294 then WN 4929 at Boston
Charlotte → Boston → St Louis
Timetable, Boston time
19:10AA 3294 from Charlotte at the gate
18:35WN 4929 to St Louis leaves the gate
23 h 25 apart on the timetable, overnight
WN 4929 leaves 23 h 25 after AA 3294 arrives on the timetable: more than half a day, so not a connection we count.