Is it possible to create nested multiple taxonomy queries?

I’d like to create a listing of posts that meet the following criteria:

taxonomy="category" AND tax_term="product-review"
AND
( 
     (taxonomy_2="shop" AND tax_2_term="device") 
      OR
     (taxonomy_3="mods" AND tax_3_term="communications")
)

My reading of the WP documentation suggests that this is technically possible (nesting conditions), but in reading the Display Posts docs ( Taxonomy Queries – Display Posts ), I think it’s not supported since there’s only one tax_relation parameter. Is that correct?