Causative-Potential or Causative-Passive

Question

Does a verbal form like this exist.

I found this sentence while reading.

一体どこの誰に、今のこいつを黙らせられるっていうのか。

Or should I say, who the hell could be able to silence her.

I think the meaning is this, but こいつを黙らせられる is confusing.
Is it Causative-Passive or Causative-Potential?
I know だまらせる is the causative form of だます and it means

To make someone silent.

But what does だまらせられる mean in this sentence?

To be silenced or to be able to make silent?

If it were passive it should have been こいつが黙らせられる, or am I wrong?
But I also know that with potential the construction is the same.

僕に林檎が食べられる.

I read that depending on emotional attachment and other factors, at least for the potential form, が and を can be exchanged.

So I have 2 questions. What form is this? Causative-Passive or Causative-Potential?
Why is を used instead of が?

Answer 1

First of all, だまらせる is the causative form of だまる. And I think this sentence is Causative-Potential. And こいつが黙らせられる is also Causative-Potential in this sentence.

I think が黙らせられる becomes Causative-Potential or Causative-Passive according to the context. For example, 私に、彼が黙らせられるかな? ("Can I make him be silent?") is Causative-Potential. 私に彼が黙らせられる ("He is made silent by me") is Causative-Passive.

が and を are commonly used in potential form, but が is more appreciated than を. For example,　私は本が読める、私は本を読める