UA 573 then AC 4579 at San Francisco
Burbank → San Francisco → Tucson
Timetable, San Francisco time
17:50UA 573 from Burbank at the gatealso AC 3990
08:22AC 4579 to Tucson leaves the gatealso UA 5433, NZ 9749
14 h 32 apart on the timetable, overnight
AC 4579 leaves 14 h 32 after UA 573 arrives on the timetable: more than half a day, so not a connection we count.