TP 231 then UA 3752 at Dulles
Lisbon → Washington → Oklahoma City
Timetable, Washington time
15:15TP 231 from Lisbon at the gate
09:40UA 3752 to Oklahoma City leaves the gate
18 h 25 apart on the timetable, overnight
UA 3752 leaves 18 h 25 after TP 231 arrives on the timetable: more than half a day, so not a connection we count.