SQ 1543 then AF 8580 at San Francisco
New York JFK → San Francisco → Austin
Timetable, San Francisco time
19:31SQ 1543 from New York JFK at the gate
17:59AF 8580 to Austin leaves the gate
22 h 28 apart on the timetable, overnight
AF 8580 leaves 22 h 28 after SQ 1543 arrives on the timetable: more than half a day, so not a connection we count.