UA 1970 then BA 1782 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
14:18BA 1782 to Chicago O'Hare leaves the gatealso AA 1948, AY 4140
16 h 33 apart on the timetable, overnight
BA 1782 leaves 16 h 33 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.