Parent companion extensions look redundant on child's page

[atyrin]

open class ParentClassCompanionExtContainer
companion val ParentClassCompanionExtContainer.parentClassCompanionExtProperty = ""

class ChildClassCompanionExtContainer: ParentClassCompanionExtContainer()

the ChildClassCompanionExtContainer page will look like

But in general nothing connects parentClassCompanionExtProperty with ChildClassCompanionExtContainer