Is is possible for Salesforce Duplicate Management matching rules to compare across objects?
This article talks about cross-object duplicate rules:
as does this Salesforce help page:
This article shows how to make them:
but it doesn't match what I see in the Salesforce matching rules screens.
When setting up matching rule criteria, there appears to be no way to select anything other than a field from the current object.
Is this a feature that needs to be enabled somehow or that existed and was withdrawn?