In light of United States v. Ruan, were the jury instructions in Chaney incorrect and should Dr. Chaney's conviction be vacated?

QUESTION(S) PRESENTED . Number 1: In light of United States v. Ruan, were.the jury instructions in Chaney incorrect and should Dr. Chaney's conviction be vacated? Number 2: "A Conflict Between the Circuits" : Where does the burden of _ proving prejudice lie regarding unrecorded ex parte discussions between court officer's and jurors, and can an evidentiary hearing be denied by the party without the burden of proof? t i