CM 2458 then UA 373 at San Francisco
Sacramento → San Francisco → Austin
Timetable, San Francisco time
20:00CM 2458 from Sacramento at the gate
16:20UA 373 to Austin leaves the gatealso AC 4064
20 h 20 apart on the timetable, overnight
UA 373 leaves 20 h 20 after CM 2458 arrives on the timetable: more than half a day, so not a connection we count.