AA 5670 then AA 2813 at Charlotte
Lexington → Charlotte → Boston
Timetable, Charlotte time
19:36AA 5670 from Lexington at the gate
18:40AA 2813 to Boston leaves the gate
23 h 04 apart on the timetable, overnight
AA 2813 leaves 23 h 04 after AA 5670 arrives on the timetable: more than half a day, so not a connection we count.