DL 571 then DL 1410 at Boston
San Diego → Boston → Austin
Timetable, Boston time
06:40DL 571 from San Diego at the gate
06:15DL 1410 to Austin leaves the gate
23 h 35 apart on the timetable, overnight
DL 1410 leaves 23 h 35 after DL 571 arrives on the timetable: more than half a day, so not a connection we count.