AA 9915 then WN 4146 at Phoenix
Salt Lake City → Phoenix → Chicago Midway
Timetable, Phoenix time
10:40AA 9915 from Salt Lake City at the gate
10:05WN 4146 to Chicago Midway leaves the gate
23 h 25 apart on the timetable, overnight
WN 4146 leaves 23 h 25 after AA 9915 arrives on the timetable: more than half a day, so not a connection we count.