Hi, I’m flying JFK to London later this week, with a connection in MAD. I arrive in MAD at T4 and depart from T4S. Two questions. First if I purchase duty free liquor at JFK (1 bottle), will it be confiscated when I clear security at MAD? Second, is MAD to LHR considered international for duty free purposes, or is it considered domestic for duty free purposes? Thanks in advance!