AA 4425 then DL 5630 at Boston
Buffalo → Boston → Charlotte
Timetable, Boston time
13:43AA 4425 from Buffalo at the gate
11:15DL 5630 to Charlotte leaves the gate
21 h 32 apart on the timetable, overnight
DL 5630 leaves 21 h 32 after AA 4425 arrives on the timetable: more than half a day, so not a connection we count.