However, the article says that Cohen did say this in his cross:
Cohen also dramatically revealed that he dealt with an apparent photo ‘extortion’ blackmail attempt involving the ex-president’s daughter, Tiffany.
I had heard this morning that the prosecution wanted the C-SPAN archivist to be recalled to authenticate photos, so it must have something to do with Cohen's mention of Tiffany Trump.
I'm guessing that Bragg coached Cohen to find a way to bring Tiffany Trump into his testimony so he can use it to open the door for recalling the C-SPAN archivist.
-PJ