UA 5588 then AA 814 at LAX
Fresno → Los Angeles → Pittsburgh
Timetable, Los Angeles time
09:26UA 5588 from Fresno at the gate
09:02AA 814 to Pittsburgh leaves the gate
23 h 36 apart on the timetable, overnight
AA 814 leaves 23 h 36 after UA 5588 arrives on the timetable: more than half a day, so not a connection we count.