DL 1763 then DL 865 at Atlanta
San Juan → Atlanta → Boston
Timetable, Atlanta time
09:59DL 1763 from San Juan at the gate
22:40DL 865 to Boston leaves the gate
12 h 41 apart on the timetable
DL 865 leaves 12 h 41 after DL 1763 arrives on the timetable: more than half a day, so not a connection we count.