Filtering for NOT related elements to specific Element (entanglement check Change request process)

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When a Change request occurs, we need to check if the desired change would interact with further already accepted requirements. For higher numbers of requirements this is quite some effort that also needs to be documented (with a link of the kind "not conflicting" to any checked element) and also checked for its completion by a filter (in order to check if there is some element check left).

This function is "simply" the negation of showing all linked elements; thus it should be easily available from a technical perspective and for any SQL-filter. However within the filter and embedded filter mask a limitation to a specific element linkage cannot be found so far. Doing this with manual checks of comparing exported lists is too error prone; doing single tagging per each check is laborious.

Can this "simple" negation function in the filters be made accessible for the users?