AA 1960 then DL 5630 at Charlotte
San Francisco → Charlotte → Boston
Timetable, Charlotte time
16:58AA 1960 from San Francisco at the gate
14:37DL 5630 to Boston leaves the gate
21 h 39 apart on the timetable, overnight
DL 5630 leaves 21 h 39 after AA 1960 arrives on the timetable: more than half a day, so not a connection we count.