UA 3752 then CA 7407 at San Francisco
Denver → San Francisco → Austin
Timetable, San Francisco time
13:00UA 3752 from Denver at the gate
12:06CA 7407 to Austin leaves the gate
23 h 06 apart on the timetable, overnight
CA 7407 leaves 23 h 06 after UA 3752 arrives on the timetable: more than half a day, so not a connection we count.