Can a Zero Copy Source be utilized in Data Cloud related lists?

Hi Team,

I'm working on populating fields from my Snowflake Zero Copy Source, which is mapped to a Custom DMO (Profile type), onto the Contact page layout. This Custom DMO has a direct 1:1 relationship with the Individual DMO. And, the Account Contact DMO (Contact Object) also has a direct 1:1 relationship with the Individual DMO. 

After unifying the Contacts, I'm unable to transfer attributes from the Custom DMO to the Contact page layout. These are the condition I have checked and my setup meets both of them i.e.,

1. For the related list, I can only use either the Profile or Engagement DMO.
2. The DMO used for the related list must undergo identity resolution and have an established relationship with the Individual DMO.

Are there any other conditions I should verify? Does a Zero Copy data source support Data Cloud related lists? Any insights from you all would be greatly appreciated!

Thank you.