DL 669 then UA 1554 at San Francisco
New York JFK → San Francisco → San Antonio
Timetable, San Francisco time
12:39DL 669 from New York JFK at the gatealso LY 4133, VS 4753, KQ 7049, LA 7126
12:00UA 1554 to San Antonio leaves the gatealso NZ 2373, AC 4347
23 h 21 apart on the timetable, overnight
UA 1554 leaves 23 h 21 after DL 669 arrives on the timetable: more than half a day, so not a connection we count.