UA 214 then UA 1953 at San Francisco
St Louis → San Francisco → Portland (Oregon)
Timetable, San Francisco time
21:41UA 214 from St Louis at the gatealso OZ 6344, NZ 9701
12:45UA 1953 to Portland (Oregon) leaves the gatealso AC 3337, NH 7312, CA 7329, VA 8457, NZ 9349
15 h 04 apart on the timetable, overnight
UA 1953 leaves 15 h 04 after UA 214 arrives on the timetable: more than half a day, so not a connection we count.