RAG and AI search beyond basics

Hi All,

I was wondering if someone has experience with a bit more complex RAG + AI Search scenarios and would be able to suggest the best approach.

Scenario one

AI search consists of 20 car articles, e.g. Each article has 5,000 words, it's chucked into 1,500 tokes, and all this is indexed in AI search in total 1,000 entries (roughly each article is 50 chunks). These are made-up numbers just for laying down the basics of my scenario. If each article describes one car, RAG and AI search works perfectly for questions what is the price range for Tesla cars, What colours are available for BMW 5. 

We run the user's query against AI search, put relevance threshold 2 and take the 5 most relevant articles.

but

How to execute questions that require knowledge of more than 5 articles

E.g. Give me a list of all cars described? If we apply the above logic, RAG will consist only of 5 most relevant chanks and we what we need here is almost to submit all 20 articles to AI, in order get all the cars.

What is the best strategy for this UC

Scenario 2

Image: we have an AI search with all BBC articles indexed. How to if approach if a user asks give me a summary of the 5 latest articles published on BBC?

Running this query against AI search will return not return most recent articles it will return articles that have 5 latest articles published as content 

Thanks in advance