UA 3772 then AC 4432 at San Francisco
Las Vegas → San Francisco → Tucson
Timetable, San Francisco time
22:05UA 3772 from Las Vegas at the gate
18:47AC 4432 to Tucson leaves the gatealso UA 5688, LH 9398, NZ 9747
20 h 42 apart on the timetable, overnight
AC 4432 leaves 20 h 42 after UA 3772 arrives on the timetable: more than half a day, so not a connection we count.