View (a confusing one) using nodereference, exposed filters and attached display

I would like to build a particular View to "Find Something". But after several attempts I need help.
I managed to do it by hacking the Views module, but I would understand if it can be done via user interface (not a fan of modules' hack).

Here is what I have:
Content type B,
Content type with nodereference A to node B.
Example:
B = bands,
A = CD with, among other fields, the nodereference to the band (node B).

Here's what I get from my View:

Display Page: exposed filter "Search: Search Terms" and the result is then filtered with "Node: Type = A", "Node: Published = Yes" and ordered using "node Stats: Views total", for example.
Display Attach: exposed filter inherited from the display above, the nodes are filtered to "Node: Type = B".

SO, the user searches for a term and cd appear above (the page display) and bands below (the attach display).

Up to here nothing difficult. But I want that every time I see a cd from the search, the display attached (below) shows also the band connected via nodereference (other than those which would arise as a result of research).

Here I got stuck! I tried using "Relations" and "Arguments" but probably I don't have a thorough knowledge of these two pieces.
The point is that I can not get both results at once. I mean, what I can get from the Attach Display are:
1) Bands linked to the cd I found in the display Page
or (that is an exclusive OR)
2) Bands from the exposed filter.

While I'd like to see both, and without duplicate.
Any suggestions?