On behalf of @AD
Relational Design is one of the key added-value of 3DEXPERIENCE CATIA for Product Design.
In R2022xFD03, design links (Rep-Rep and Contextual Links) have been integrated in Relations tool (in order to remove the old Impact Graph).
It was then a good opportunity to update the Relational Design Best Practice to showcase those new great capabilities.
In more details, here are two videos of these integration.
Do not hesitate to contact me for more information on this topic.