UA 1936 then AA 9344 at San Francisco
Eugene → San Francisco → Santa Ana
Timetable, San Francisco time
21:05UA 1936 from Eugene at the gatealso NZ 9172
17:49AA 9344 to Santa Ana leaves the gate
20 h 44 apart on the timetable, overnight
AA 9344 leaves 20 h 44 after UA 1936 arrives on the timetable: more than half a day, so not a connection we count.