Looking for a way to close child cases after parent cases close, or at the very least being able to hide them using a filter for a case list

Hi! I was wondering if there was an automatic way to close child cases after parent cases closed. If not, is there a way to filter out child cases whose parent cases are closed in case lists? I noticed that there is a "closed" property in the case exports. However, I cannot seem to reference this case property in the Display Condition of the forms.

Any input regarding this would be much appreciated. Thanks so much!