I am trying to create a many-to-many relationship with an pre-populated intermediate table with attributes, using the "Table to Relationship Class" tool.
I am following the workflow presented in the ArcGIS Blog "Explore a many-to-many relationship" by Diana Muresan (https://www.esri.com/arcgis-blog/products/arcgis-pro/data-management/explore-a-many-to-many-relation... but with no result: related records are not displayed
The relationship class is created and appears in the project database. I add it to the the map ("Add to Current Map" from project database) where it appears as a stand-alone table.
I also tried to remove the original feature class from the map and and re-add it from "Catalog" pane, but with no result.
As a benchmark, I also develop the example described in the Muresan's article, but also in this case I never get the expected result (see attached picture from step 8 of chapter "Explore the related records and relationship class").

I am using ArcGIS Pro 3.4.3.
Any suggestion? Thank you