UA 2 then UA 545 at San Francisco
Singapore → San Francisco → Austin
Timetable, San Francisco time
09:15UA 2 from Singapore at the gate
08:40UA 545 to Austin leaves the gatealso AC 5289, VA 8467
23 h 25 apart on the timetable, overnight
UA 545 leaves 23 h 25 after UA 2 arrives on the timetable: more than half a day, so not a connection we count.