Originally Posted by
Aviatrix
Taking lessons from Ryanair maybe???
(Many of Ryanair's destinations are completely, proudly separate cities from the places Ryanair claims to fly to - such as the ancient Hanseatic City of Lübeck which they call "Hamburg")
Ryanair sometimes even list destinations that are in a different country to what's intended (e.g. Vienna (Bratislava)).
Anyway, listing Antwerp as Brussels only occurred after the switch to amadeus so I suspect it is a bug rather than an attempt to copy ryanair (also I suspect they'd rather sell you a flight to BRU than a rail ticket to ANR).