AA 5564 then DL 5630 at Charlotte
Harrisburg → Charlotte → Boston
Timetable, Charlotte time
18:46AA 5564 from Harrisburg at the gate
14:37DL 5630 to Boston leaves the gate
19 h 51 apart on the timetable, overnight
DL 5630 leaves 19 h 51 after AA 5564 arrives on the timetable: more than half a day, so not a connection we count.