UA 1812 then CA 7407 at San Francisco
Denver → San Francisco → Austin
Timetable, San Francisco time
15:12UA 1812 from Denver at the gatealso AC 3617, VA 8354, NZ 9071
12:06CA 7407 to Austin leaves the gate
20 h 54 apart on the timetable, overnight
CA 7407 leaves 20 h 54 after UA 1812 arrives on the timetable: more than half a day, so not a connection we count.