Are single reference fields one direction?

In the collection “NameA”, there’s a reference field called “mySingleRefB” that refers to one single item in collection “NameB”.

From collection “NameA”, I can see the item referenced in the other collection “NameB”.
The question is. If I am in collection “NameB” - Can I see the reference field from “NameA”?

Because In my tests it seems to be a one-way direction when I work with single-reference-fields and a two-way direction with multi-reference-fields.

cheers