MU 8665 then UA 5621 at San Francisco
New York JFK → San Francisco → Eugene
Timetable, San Francisco time
22:38MU 8665 from New York JFK at the gate
11:15UA 5621 to Eugene leaves the gate
12 h 37 apart on the timetable, overnight
UA 5621 leaves 12 h 37 after MU 8665 arrives on the timetable: more than half a day, so not a connection we count.