AA 5208 then DL 5630 at Charlotte
Springfield → Charlotte → Boston
Timetable, Charlotte time
14:49AA 5208 from Springfield at the gate
14:37DL 5630 to Boston leaves the gate
23 h 48 apart on the timetable, overnight
DL 5630 leaves 23 h 48 after AA 5208 arrives on the timetable: more than half a day, so not a connection we count.