But, I can't seem to link the actual underlying data on any of the content relationship children.
Basically:
Custom Navigation Type
Group Field
Content Relationship Field
-- of custom type Page
Page Type
Group Field
Content Relationship Field
-- of custom type Page
I need to get a list of the UIDs of each of the navigation item's group field, but I haven't been able to pull this out of a graphQuery due to there not being a retrievable schema that I can find in the documentation.