UA 2358 then UA 545 at San Francisco
Houston → San Francisco → Austin
Timetable, San Francisco time
12:19UA 2358 from Houston at the gatealso VA 8067, NZ 9214
08:40UA 545 to Austin leaves the gatealso AC 5289, VA 8467
20 h 21 apart on the timetable, overnight
UA 545 leaves 20 h 21 after UA 2358 arrives on the timetable: more than half a day, so not a connection we count.