The proceedings on Monday seemed to be just the start of what may be even to more legal wrangling over the materials seized from Cohen, as the legal team for the President's personal lawyer will get a chance to see what the government has found, and then presumably, there could be legal challenges on whether that material should then be reviewed by prosecutors.
For now, the seized documents remain with the FBI "taint team" while awaiting further legal action.
The surprise FBI raid on April 9 was executed after the feds told a federal magistrate in New York that Cohen was under investigation "for criminal conduct that largely centers on his personal business dealings." It was not clear if there were any direct links to President Trump.
As the court hearing developed, Cohen was asked to reveal the names of all of his clients, in order for the judge to further determine how to proceed with questions about the evidence.
Cohen and his legal team had made clear two of the clients included President Trump, as well as Elliott Brody, a GOP donor who recently resigned from a top position on the Republican National Committee.
But there was one more.
Cohen resisted, but then was forced to reveal the name - that of conservative talk radio host Sean Hannity.
But while Cohen claimed Hannity as a client, the Fox News host indicated their relationship was not one that included actual legal work.
On his afternoon radio show, Hannity said he found the news media response to the revelation to be 'insane,' as he indicated that he was never really a 'client' of Cohen - which ran counter to what Cohen had presented in the courtroom.
It was not immediately clear if there were any records seized by the FBI in the Cohen raid that had any relation to Hannity, who said on Twitter that most of his legal conversations with Cohen had been about real estate.