As it was set later to 60 m.
1. Where/when did they do it? (It is not in the transcript)
2. Why would someone do it without loudly communicating it to others?
3. Why would something like that be done without any discussion?
4. If the the autopilot was not on the H-hold mode, what mode was it in?
5. How did they get so low without monitoring instruments?
6. Why would the dangerous altitude sound 0.3[s] after the 2nd issues the goaway command? Probability of coincidence is almost NONE here.