UA 1970 then Y4 2410 at San Francisco
Cleveland → San Francisco → Denver
Timetable, San Francisco time
21:45UA 1970 from Cleveland at the gatealso VA 8489, NZ 9046, OZ 9526
12:20Y4 2410 to Denver leaves the gatealso F9 3436
14 h 35 apart on the timetable, overnight
Y4 2410 leaves 14 h 35 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.