Some Turkish Newspaper states that they have reliable information which is,
aprentice was in control on right seat, FO in the jumper, FO is the one who recognizes the situation and starts shouting throtle-throtle but as we all now it was to late.
Turkish Version (not the CVR, only the article)
"Gaz Hocam gaz" - GÜNDEM - HABERTÜRK - Türkiye'nin En Büyük İnternet Gazetesi