As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT FROM FL 210, POWER REDUCED ON BOTH ENGINES, NR 2 ENGINE NOT RESPONSIVE TO THRUST LEVER POSITION FOR +1/-2 MINS AND MAINTAINED 80% N1 WHILE / THE LEVER AT 101E. SUBSEQUENTLY BEGAN RESPONDING TO THRUST LEVER AND OPERATED NORMALLY TO LANDING