WN 4355 then UA 581 at San Francisco
Austin → San Francisco → Cleveland
Timetable, San Francisco time
17:55WN 4355 from Austin at the gate
12:45UA 581 to Cleveland leaves the gate
18 h 50 apart on the timetable, overnight
UA 581 leaves 18 h 50 after WN 4355 arrives on the timetable: more than half a day, so not a connection we count.