U2 7643 then UA 53 at Zurich
Lisbon → Zurich → Washington
Timetable, Zurich time
13:55U2 7643 from Lisbon at the gate
11:45UA 53 to Washington leaves the gate
21 h 50 apart on the timetable, overnight
UA 53 leaves 21 h 50 after U2 7643 arrives on the timetable: more than half a day, so not a connection we count.