AV 2347 then AF 8580 at San Francisco
Burbank → San Francisco → Austin
Timetable, San Francisco time
20:08AV 2347 from Burbank at the gate
17:59AF 8580 to Austin leaves the gate
21 h 51 apart on the timetable, overnight
AF 8580 leaves 21 h 51 after AV 2347 arrives on the timetable: more than half a day, so not a connection we count.