6 hr layover is not a big deal for a seasoned traveler. take whatever toys are necessary to keep you occupied, like music or a book. or just go to the AA place and drink a lot.

in the past, if one shipped luggage to dfw, then on to eze, it was that person' s responsibility to pick it up in dfw, or the airline's responsibility to deliver it to somewhere in the area. if you are gone(like to eze), and the bag arrives two days later, it stays in its' final destination(dfw). corrections requested.