Restricting implied relationships to same hierarchy

[hornjbl]

Is there a way to tell the plugin to pick up implied relationships ONLY within the same hierarchy?

What I'm seeing now is the following:

I have a hierarchy of, for example, parent-child, and another of employer-employee.

If A is the mother of B, but also the employer of X, then the plugin seems to think that B is the implied sibling of X, because they are both "under" A. Even though the relationships aren't in the same hierarchy, and therefore shouldn't be forming the implied relationships between B and X.

I still want the implied relationships within the same hierarchy though. So if I specified A as the mother of both B and C, the implied relationship of sibling between B and C should still be formed.

Looking through the settings, it looks like you can turn implied relationships off and on on various levels, but not restrict it to within the same hierarchy.