How to connect two fields from two post types?

hello

First of all, thank you for this useful plugin
I have a question:

How can I connect a field in one post type to another post type field(url)? So that the field of the first post type is completed from the second field?

the second post type is for products and the first post type is for brands. And I want the posts of the second post type (i.e. products) to get the affiliate link from the link field of the first post type.