Last night they showed an expanded version of the current promo. In it, Dallas, Ken (with bag), Toni (with bag), Tina, Nick (with bag), and Starr are running practically neck and neck, in that order, down a street or sidewalk. NO ONE has their backpacks, just the Amazing Race bags. Dandrew are not visible. This is clearly park of the submarine challenge since during the same promo they showed Ken and Tina running hard on the heels of Dallas with what I believe has been identified as the submarine in the background - no one has their backpacks either.
Later in that promo, no idea what sequence of events, they show Toni and Dallas running with their backpacks. Andrew is clearly visible in his yellow ASU shirt running behind and to their right. Although I don't see Andrew's backpack. The other problem in this scene is that I can't see where Toni and Dallas have their bag. It apparently is not around Toni's waist. But it may be on Dallas since they are running with their backpacks. Although they also show Toni carrying the bag while both of the are wearing their backpacks in another sequence. Confusing and unsure of actual sequence and whether the Toni/Dallas bag is out of view due to editing or camera angles.
Susan