glyph,

>> 2. Do I notify you if Joe disappears on my side?
>>
> Yes.
> <https://github.com/twisted/twisted/blob/a8227e5562a4f9074bb0d5faf6a10e91069704aa/twisted/spread/pb.py#L365-L369>.

That's the recipient announcing deletion, not the sender. And anyway, my questions is how _should_ this work, not how does it work right now.

Daniel