Huh? Exchanging the baton within the lines is an unknown detail that is hard to find within the rule book?
Being from Canada and having no vested interest, I don’t fault GB at all for protesting. It seems just as illegal to exchange outside the zone as it does to step on the line of a 200m race. If USTF is going to protest after the fact with video evidence (ala Beijing 200m), they need to be willing to accept the results of protests from other countries, after the fact, with video evidence.