AA 1954 then AC 4370 at San Francisco
Chicago O'Hare → San Francisco → Reno
Timetable, San Francisco time
21:56AA 1954 from Chicago O'Hare at the gatealso GF 6444
18:55AC 4370 to Reno leaves the gate
20 h 59 apart on the timetable, overnight
AC 4370 leaves 20 h 59 after AA 1954 arrives on the timetable: more than half a day, so not a connection we count.