DL 154 then FR 96 at Dublin
Boston → Dublin → Prague
Timetable, Dublin time
09:45DL 154 from Boston at the gate
07:30FR 96 to Prague leaves the gate
21 h 45 apart on the timetable, overnight
FR 96 leaves 21 h 45 after DL 154 arrives on the timetable: more than half a day, so not a connection we count.