IMHO...The other pilot was probably overwhelmed by the situation like the nh pilot on the flight deck of Gf 072 who possibly observed the approach going wrong then failed to monitor the flight path instruments and step in and take control as the hp gradualy lost flight path control.
Strangely it appears to take a huge effort of will to speak up positively and break the chain of events as things go wrong and takeover control if the hp is overwhelmed by events and is about to kill you. Why is this?
I feel this effort is especially hard if you are a very low hours and inexperianced nh monitoring pilot.
This was the case in both these young low hours fo crewed fatal crashes.
A possible solution is the old Ba system also used on the GF L1011 where the fo flys the approach and the Captain monitors.
Correct me if I am wrong but I have not heard of a fo flying captain monitoring non precision or low vis autoland crash.
Young low hours low line experiance pilots have passed all the pshco tests and licence training and can perform to an impressive very high standard indeed, however it is in the phase when these pilots are required to monitor where it appears to go wrong.
Young low time fo pilots required to monitor appear to lack effective training to step in and save the ship in these low level situations and it is here where accident record shows it all falls apart.
Do these fo deserve better training in this area where the Capt monitored fo flying in imc approaches are not sop?