UA 6047 then OO 301 at O'Hare
Pittsburgh → Chicago → Milwaukee
Timetable, Chicago time
20:31UA 6047 from Pittsburgh at the gate
20:19OO 301 to Milwaukee leaves the gate
23 h 48 apart on the timetable, overnight
OO 301 leaves 23 h 48 after UA 6047 arrives on the timetable: more than half a day, so not a connection we count.