I am finding it difficult to continue with this thread... the hypothetical is merging with real-life... if these events are actually happening then I don't think PPRuNe is the best way to find a safe solution? We should all have SMS systems in place, this is a potential accident (hypothetical or not)... run it through the SMS?
DFC... you last past was so full "what-ifs and maybes" that I haven't a clue what you're talking about?... but I'd be quite interested in who you mean by "the professionals at the sharp end"?