UA 1341 then AC 4470 at San Francisco
Detroit → San Francisco → Ontario
Timetable, San Francisco time
19:31UA 1341 from Detroit at the gatealso OZ 9538
14:00AC 4470 to Ontario leaves the gatealso UA 5592
18 h 29 apart on the timetable, overnight
AC 4470 leaves 18 h 29 after UA 1341 arrives on the timetable: more than half a day, so not a connection we count.