Rank Feature Query as multiplier

I am looking to multiply score from Rank feature query(Rank feature query | Elasticsearch Guide [7.16] | Elastic) to relevancy score calculated from my query.

I know we can do something similar using rescore query and function score query. Is there a way to achieve the same using Rank Feature query, as it can dramatically improve query speed as per documentation.

Thanks in Advance.

Wild outside thought without knowing your implementation: Would boost and linear function help as part of your query in your case?

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