UA 574 then CA 7407 at San Francisco
Boston → San Francisco → Austin
Timetable, San Francisco time
12:49UA 574 from Boston at the gate
12:06CA 7407 to Austin leaves the gate
23 h 17 apart on the timetable, overnight
CA 7407 leaves 23 h 17 after UA 574 arrives on the timetable: more than half a day, so not a connection we count.