AA 1058 then UA 3910 at O'Hare
San Diego → Chicago → Newark
Timetable, Chicago time
12:42AA 1058 from San Diego at the gate
07:30UA 3910 to Newark leaves the gate
18 h 48 apart on the timetable, overnight
UA 3910 leaves 18 h 48 after AA 1058 arrives on the timetable: more than half a day, so not a connection we count.