AA 418 then AA 1803 at Charlotte
Boston → Charlotte → Wilmington
Timetable, Charlotte time
08:25AA 418 from Boston at the gate
20:45AA 1803 to Wilmington leaves the gate
12 h 20 apart on the timetable
AA 1803 leaves 12 h 20 after AA 418 arrives on the timetable: more than half a day, so not a connection we count.