UA 260 then FR 572 at Madrid
Washington → Madrid → Porto
Timetable, Madrid time
07:45UA 260 from Washington at the gatealso AC 3816, SN 8927, LH 9385
22:40FR 572 to Porto leaves the gate
14 h 55 apart on the timetable
FR 572 leaves 14 h 55 after UA 260 arrives on the timetable: more than half a day, so not a connection we count.