FR 507 then DL 155 at Dublin
Bristol → Dublin → Boston
Timetable, Dublin time
13:55FR 507 from Bristol at the gate
11:55DL 155 to Boston leaves the gate
22 h apart on the timetable, overnight
DL 155 leaves 22 h after FR 507 arrives on the timetable: more than half a day, so not a connection we count.