TAM Airlines and Lan Chile formed a Commercial Alliance.

This ground breaking agreement, will allow code shares and further joint co-operation initiatives between the two major carriers in South America.
This means that passengers can travel on Lan services between Sydney, Auckland, Santiago and return and combine with the TAM South America Pass and the TAM Brazil Air Pass, for travel within South America and Brazil.
“The lifting of this restriction means those passengers from Australia and New Zealand will now have greatly increased options to travel to Brazil and utilize the TAM passes,” said John Boyd, Regional Manager for TAM Australia.
For more information click here and read the article in e-travel website