DL 517 then AA 1353 at San Francisco
Atlanta → San Francisco → Chicago O'Hare
Timetable, San Francisco time
18:57DL 517 from Atlanta at the gatealso VS 5289, LA 6387
07:13AA 1353 to Chicago O'Hare leaves the gatealso IB 4078, QF 4693, EI 7102
12 h 16 apart on the timetable, overnight
AA 1353 leaves 12 h 16 after DL 517 arrives on the timetable: more than half a day, so not a connection we count.