Neural Connections

\nskContainer[text-west=Layer 3]{
  \foreach \i in {1,...,3} {\nskBlock*[id=l3\i, last-pos-s={right=}, \tl]}
}
\nskMark[pos={below left=3cm and 1cm of \nskID!{1}}]
\nskContainer[text-west=Layer 2, text-south=Straight]{
  \foreach \i in {1,...,3} {\nskBlock*[id=l2\i, pos={right=of \nskID{1}}, \bll]}
}
 
\foreach \i in {1,...,3} {
    \foreach \j in {1,...,3} {
        \nskConnect[
          from=l2\j.north, to=l3\i.south, 
          bend-type=straight, bend-distance=4mm,
        ]
      }
  }