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Concept set of concept sets

I have the use case of needing a concept set of concept sets. How can I do this in ATLAS?

What is concept set of concept sets exactly?

Concept sets are virtual objects that are more or less specific to Atlas, they do not have a standardized representation in OMOP tables – as such, they are not CDM concepts that Atlas can put in a set. Are you sure that what you are looking for is not a cohort definition?

Maybe I am looking for a cohort definition. Is there a way I can set precedence rules (use concept set id first then 2nd concept set id) in a cohort definition? If this possible, how could I get this returned using the Web API? I’ve tried the API’s and haven’t found what they return is very useful.