IB 346 then UX 5465 at Madrid
Boston → Madrid → Seville
Timetable, Madrid time
08:05IB 346 from Boston at the gate
20:10UX 5465 to Seville leaves the gate
12 h 05 apart on the timetable
UX 5465 leaves 12 h 05 after IB 346 arrives on the timetable: more than half a day, so not a connection we count.