UA 1341 then AA 3049 at San Francisco
Detroit → San Francisco → Chicago O'Hare
Timetable, San Francisco time
19:31UA 1341 from Detroit at the gatealso OZ 9538
13:42AA 3049 to Chicago O'Hare leaves the gatealso QF 3164, GF 6457, JL 7550
18 h 11 apart on the timetable, overnight
AA 3049 leaves 18 h 11 after UA 1341 arrives on the timetable: more than half a day, so not a connection we count.