Profile: Sandra

Problem:
How can you connect a Child to more then one Parent Post Type

Solution:
With Parent / Child Relationships you can have many Childs of the same type for one Parent but not many parents of the same type for a Child-

This can be solved by using a Intermediary Post Object.

You can also use a taxonomy to connect more Parents of the same type to your Childs

What you need is to create a Intermediary (connecting) Post Type or Taxonomy, which will be Child of both the already created Post types.

This Intermediary Post Object will be the one you Query in your View and then you call the related parents with

[your-field id="$parent_post_type_slug"]

Relevant Documentation:
https://toolset.com/documentation/user-guides/many-to-many-post-relationship/
https://toolset.com/faq/how-do-i-associate-one-child-with-several-parents-of-the-same-type/