I don't know. 12 guests on 2 members that makes a lot. Sometimes, I want to answer to someone, but I say in myself that if I answer I take the responsabiity regarding to the person. I have not always the good response or a idea to bring. Maybe it's the same for them.
There is often many responses to the questions awaited. Like here, I don't think that my intevention moves the discussion forward.