How can I extract latest topics across all forums inside a category page

this doesnt work because we have sub-category inside each category.

And each sub-category has forum pages.

Under each forum page we have threads/messages

And i want to get all the messages/threads from each forum under each sub-category.

The only way I could achieve this is by looping

<#list rest("/categories/id/{CATEGORY_ID}").category.categories.category as category>

<#list rest("/categories/id/{CATEGORY_ID}/${category.@href}").category.boards.board as board>

<#assign threads = rest("/categories/id/knowledgebase/${category.@href}/${board.@href}/threads/>

</#list>
</#list>

So now my threads variable has all the data for each forum under each sub-category.

Cheers

Rupam