How does Facebook ADS "audience narrowing" work?

Question

Facebook

Now, if you choose interests

• Interior Design
  
• interior
  

Narrow down:

• business
  
• architecture
  

Do I understand correctly that these 4 types of targeting will be combined with each other?
interior design + business
interior design + architecture
interior + business
interior + architecture

Answer 1

The narrowing of the audience occurs according to the type:
1st block: interests, positions, etc. (1 of these criteria)
+ narrowing 2nd block: interests, behavior and positions (1 of these criteria)
therefore comes out: at least 1 of the criteria in the first block and also matching at least 1 criterion from the second block.