BA 2954 then UA 545 at San Francisco
Las Vegas → San Francisco → Austin
Timetable, San Francisco time
12:16BA 2954 from Las Vegas at the gate
08:40UA 545 to Austin leaves the gatealso AC 5289, VA 8467
20 h 24 apart on the timetable, overnight
UA 545 leaves 20 h 24 after BA 2954 arrives on the timetable: more than half a day, so not a connection we count.