Most dictionaries define Discussion as an open debate where different viewpoints are exchanged in order to reach a solution. Only witnesses use the word discussion to refer to a precooked Q&A session.
It is interesting to see neutrality defined as not taking sides, since Malawian JW's were not allowed to buy a party card in their one-party country on grounds of their neutrality.
Lastly, I'm wondering why in this case the brothers and sisters are required to use their own letterhead. Weren't you always supposed to use the congregations' letterhead with letterwriting?