AA 3294 then AS 389 at Boston
Charlotte → Boston → San Diego
Timetable, Boston time
19:10AA 3294 from Charlotte at the gate
18:09AS 389 to San Diego leaves the gate
22 h 59 apart on the timetable, overnight
AS 389 leaves 22 h 59 after AA 3294 arrives on the timetable: more than half a day, so not a connection we count.