All of the page titles are controlled via this code in customer/home.tpl:
Code:
<TITLE>
{if $config.SEO.page_title_format eq "A"}
{section name=position loop=$location}
{$location[position].0|escape}
{if not %position.last%} :: {/if}
{/section}
{else}
{section name=position loop=$location step=-1}
{$location[position].0|escape}
{if not %position.last%} :: {/if}
{/section}
{/if}
</TITLE>