UA 1341 then UA 436 at San Francisco
Detroit → San Francisco → Ontario
Timetable, San Francisco time
19:31UA 1341 from Detroit at the gatealso OZ 9538
16:35UA 436 to Ontario leaves the gate
21 h 04 apart on the timetable, overnight
UA 436 leaves 21 h 04 after UA 1341 arrives on the timetable: more than half a day, so not a connection we count.