Beckles - oneworld Explorer allows backtracking within a continent. It does not allow backtracking between continents with the exception of North and South America. However, the product generally allows for a stopover only once per city, transits excluded. Also I noticed that the intention was to use BA as the carrier from LHR to SCL and for the points inbetween but credit to an AA account. These flights are not eligible, they are categorized as transatlantic. I checked this with AA sometime back as I wanted to do something similar.
[This message has been edited by mgm (edited 08-26-1999).]