UA 1811 then AC 5484 at San Francisco
Chicago O'Hare → San Francisco → Austin
Timetable, San Francisco time
16:23UA 1811 from Chicago O'Hare at the gatealso AC 4153
16:20AC 5484 to Austin leaves the gate
23 h 57 apart on the timetable, overnight
AC 5484 leaves 23 h 57 after UA 1811 arrives on the timetable: more than half a day, so not a connection we count.