AC 4121 then VA 8235 at San Francisco
Ontario → San Francisco → Austin
Timetable, San Francisco time
17:50AC 4121 from Ontario at the gate
12:06VA 8235 to Austin leaves the gate
18 h 16 apart on the timetable, overnight
VA 8235 leaves 18 h 16 after AC 4121 arrives on the timetable: more than half a day, so not a connection we count.