AA 3444 then DL 5630 at Boston
St Louis → Boston → Charlotte
Timetable, Boston time
13:26AA 3444 from St Louis at the gate
11:25DL 5630 to Charlotte leaves the gate
21 h 59 apart on the timetable, overnight
DL 5630 leaves 21 h 59 after AA 3444 arrives on the timetable: more than half a day, so not a connection we count.