UA 433 then AA 939 at San Francisco
Fort Myers → San Francisco → Dallas-Fort Worth
Timetable, San Francisco time
11:21UA 433 from Fort Myers at the gate
23:23AA 939 to Dallas-Fort Worth leaves the gatealso CZ 1632
12 h 02 apart on the timetable
AA 939 leaves 12 h 02 after UA 433 arrives on the timetable: more than half a day, so not a connection we count.