UA 4592 then TP 244 at O'Hare
St Louis → Chicago → Lisbon
Timetable, Chicago time
19:05UA 4592 from St Louis at the gate
19:00TP 244 to Lisbon leaves the gate
23 h 55 apart on the timetable, overnight
TP 244 leaves 23 h 55 after UA 4592 arrives on the timetable: more than half a day, so not a connection we count.