UA 1970 then UA 2391 at San Francisco
Cleveland → San Francisco → Cincinnati
Timetable, San Francisco time
21:45UA 1970 from Cleveland at the gatealso VA 8489, NZ 9046, OZ 9526
12:15UA 2391 to Cincinnati leaves the gatealso NZ 2853
14 h 30 apart on the timetable, overnight
UA 2391 leaves 14 h 30 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.