AA 2120 then DL 2112 at San Francisco
Dallas-Fort Worth → San Francisco → New York JFK
Timetable, San Francisco time
08:56AA 2120 from Dallas-Fort Worth at the gatealso IB 8018
21:35DL 2112 to New York JFK leaves the gatealso AM 4443, VS 4856, KQ 7007
12 h 39 apart on the timetable
DL 2112 leaves 12 h 39 after AA 2120 arrives on the timetable: more than half a day, so not a connection we count.