FR 97 then EI 81 at Dublin
Prague → Dublin → Pittsburgh
Timetable, Dublin time
18:50FR 97 from Prague at the gate
16:15EI 81 to Pittsburgh leaves the gate
21 h 25 apart on the timetable, overnight
EI 81 leaves 21 h 25 after FR 97 arrives on the timetable: more than half a day, so not a connection we count.