UA 6047 then PD 2706 at O'Hare
Pittsburgh → Chicago → Toronto (YTZ)
Timetable, Chicago time
20:31UA 6047 from Pittsburgh at the gate
18:20PD 2706 to Toronto (YTZ) leaves the gate
21 h 49 apart on the timetable, overnight
PD 2706 leaves 21 h 49 after UA 6047 arrives on the timetable: more than half a day, so not a connection we count.