AV 2104 then AA 1253 at San Francisco
San Luis Obispo → San Francisco → Chicago O'Hare
Timetable, San Francisco time
15:21AV 2104 from San Luis Obispo at the gate
10:34AA 1253 to Chicago O'Hare leaves the gatealso IB 4495, QF 4697, PD 6338, GF 6456, EI 7303
19 h 13 apart on the timetable, overnight
AA 1253 leaves 19 h 13 after AV 2104 arrives on the timetable: more than half a day, so not a connection we count.