CM 2326 then AC 4122 at San Francisco
Seattle → San Francisco → Ontario
Timetable, San Francisco time
21:50CM 2326 from Seattle at the gate
18:50AC 4122 to Ontario leaves the gate
21 h apart on the timetable, overnight
AC 4122 leaves 21 h after CM 2326 arrives on the timetable: more than half a day, so not a connection we count.