Multiple level dossier - dynamic filtering on Display Form

On the Display Form for a list (List A), it naturally displays details for one item from that list.

Using a Dossier (D1), it can also display all of the related items from a sub-item list (List B).

After creating a second Dossier (D2), with List B as the main list, and List C as its sub-item, such that we now have D1=List A->List B, and D2=List B->List C, I want to then, on the D1 Display Form, be able to select one (or more) of those (many, List B) items, and display (only) the List C items that relate to the selected List B item (or items - if multiple selection is possible).

These List C items obviously are also indirectly related to the List A item, via the C->B and B->A lookup connections.

Preferably, while no List B item is selected I would like to display (only) all indirectly related List C items (again, on the D1 Display form), thus on the one form displaying an Item from List A, along with all of its related List B items and all of its (indirectly related) List C items. If one (or more) List B items is/are selected, filter the display of List C items, according to the selection of List B item(s).

It would also be desirable to have the List B display configurable, by the solution designer, to allow either i) only single item at-a-time selection [i.e. selecting an item automatically de-selects any previous selection], or ii) multiple item at-a-time selection.