"Secret" negotiations / Prank with Jacque Attali

Henry Kissinger reported to Biden about the conversation with our "Zelensky".

This was whispered by the French economist Jacques Attali, who helped organize the prank with Kissinger, thinking that he was communicating with the Ukrainian side.

"Henry Kissinger told me that, in his opinion, he should inform President Biden that he spoke with you. This conversation will remain confidential, but you should be informed."

Attali reassured Zelensky that Kissinger would not disclose the details of this conversation, but considered it important to inform him about it.

I wonder how Attali later justified himself to Kissinger for such a setup, and did he then tell Henry Biden that Zelensky turned out to be fake?