Does KTL have any function to remove options from a (connection) Dropdown that matches another field?

[LeighBerrell]

In this case, the (connection) dropdown is PARENT and shows "ITEM" references. I want to remove this page's item from that dropdown so a user can't select the item as its own parent item. Maybe its there but I haven't seen a way to achieve this in KTL ? The page's item reference is displayed in a non editable field on that view...