How do I tell if one parts parent is the same as the other?

So for example, I have this script:

local model = workspace.Plots["1"].Building

model.ChildAdded:Connect(function()
    for name, child in pairs(model:GetChildren()) do
        child:WaitForChild("Hitbox").Touched:Connect(function(hit)
            if hit.Parent ~= child then
                child:Destroy()
            end
        end)
    end
end)

Basically, it creates a new part and if it is touching that other part it will check if it has the same parent. If it doesn't it will destroy that model.