items from multi-value node reference field in table format

Hello,
I am trying to describe some kind of electronic schema with drupal. The schema contains several elements. Each element has a number of pins. Some pins of some elements are interconnected.
I created the Signal node type to describe this interconnection. It has a number of fields that describe this signal + an entity reference field (multi-value) to reference Pin nodes.
Pin nodes have a designator field (the number of the pin) + entity reference to the element node type.

The illustration of the structure is below:
signal - pinX - element1
\-pinY - element2
......

Now I need to create a view that in table format has the following columns:
1-3 some regular fields from the signal node
4 The designator of the pin that connects signal to element1 (predefined node id)
5 The designator of the pin that connects signal to element2 (predefined node id)

I added the relationship to pin node, this adds a number of raws to my table (each pin has its own row, while I need a row per signal).
I added the filter to include only pins that are connected to element1. This works, but I can't do the same for the second element.

Is there any way to implement this view? May be there is some additional module for this?