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This is expected result, you an setup only one post type relationship filter in a single view, and here is a workaround with some custom codes using Views filter hook wpv_filter_query, for example:
1) edit your view, add a " Post relationship filter":
Select posts that are children of the Post with ID set by the URL parameter wpv-produit-filter.
eg. hidden link
2) Use filter hook wpv_filter_query to apply another filter, add below codes into your theme/functions.php: