UA 246 then UA 1757 at San Francisco
Chicago O'Hare → San Francisco → Reno
Timetable, San Francisco time
08:47UA 246 from Chicago O'Hare at the gatealso AC 5029, CA 7294, VA 8094, NZ 9323
22:35UA 1757 to Reno leaves the gatealso AC 4370, LH 7798
13 h 48 apart on the timetable
UA 1757 leaves 13 h 48 after UA 246 arrives on the timetable: more than half a day, so not a connection we count.