UA 1970 then AA 3049 at San Francisco
Cleveland → San Francisco → Chicago O'Hare
Timetable, San Francisco time
21:45UA 1970 from Cleveland at the gatealso VA 8489, NZ 9046, OZ 9526
13:42AA 3049 to Chicago O'Hare leaves the gatealso QF 3164, GF 6457, JL 7550
15 h 57 apart on the timetable, overnight
AA 3049 leaves 15 h 57 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.