UA 2 then RJ 7417 at San Francisco
Singapore → San Francisco → Dallas-Fort Worth
Timetable, San Francisco time
09:15UA 2 from Singapore at the gate
08:55RJ 7417 to Dallas-Fort Worth leaves the gate
23 h 40 apart on the timetable, overnight
RJ 7417 leaves 23 h 40 after UA 2 arrives on the timetable: more than half a day, so not a connection we count.