@mcc Yes, absolutely true. However, many of the ways that information flows from `c` to `a` in this structure are inhibited by domain blocks.
`b` can't share posts by `c` to `a`, and some parts of a conversation between `b` and `c` are hidden, too. So, unlike a situation where `a` and `c` just don't know each other, domain blocks inhibit connectivity and network value.
*Ideas* that `b` gets from `c` can be communicated to `a`, though. So it's not perfectly blocking transmission.