UA 3875 then Y4 2243 at San Francisco
IAB → San Francisco → Dallas-Fort Worth
Timetable, San Francisco time
01:46UA 3875 from IAB at the gate
23:47Y4 2243 to Dallas-Fort Worth leaves the gatealso F9 2930
22 h 01 apart on the timetable
Y4 2243 leaves 22 h 01 after UA 3875 arrives on the timetable: more than half a day, so not a connection we count.