UA 1372 then MX 229 at San Francisco
Seattle → San Francisco → Louisville
Timetable, San Francisco time
11:24UA 1372 from Seattle at the gatealso CA 7306, VA 8291, NZ 9427
06:30MX 229 to Louisville leaves the gate
19 h 06 apart on the timetable, overnight
MX 229 leaves 19 h 06 after UA 1372 arrives on the timetable: more than half a day, so not a connection we count.