UA 1341 then AA 2524 at San Francisco
Detroit → San Francisco → Chicago O'Hare
Timetable, San Francisco time
19:31UA 1341 from Detroit at the gatealso OZ 9538
15:04AA 2524 to Chicago O'Hare leaves the gatealso QF 4550, FJ 5015
19 h 33 apart on the timetable, overnight
AA 2524 leaves 19 h 33 after UA 1341 arrives on the timetable: more than half a day, so not a connection we count.