One of the Holy Father's first nominations to episcopacy in 2013 was Victor Manuel Fernandez, Rector of the Pontifical Argentinian Catholic University; a post to which he had been appointed by Cardinal Bergoglio. He is only 52; his consecration was not followed by assignment to any pastoral episcopal ministry ... he remains merely Archbishop titularis of Tiburnia. He is thought to have collaborated with Bergoglio in the drafting of the Apparecida document from CELAM.
Fernandez was one of those specifically added to the recent Synod by act of the Sovereign Pontiff.
Before the Synod, the Holy Father very laudably urged the Synod Fathers to speak with parrhesia, a useful Greek term meaning completely unfearful boldness of speech. Immediately afterwards, Archbishop Fernandez was reported to have been heard saying "The pope told us to speak frankly. That means that we don't have to worry about Cardinal Mueller coming after us".
I think such words ... from such a person ... really are quite interesting, from quite a lot of different points of view. But I won't pompously spell it all out myself.