Render comment parts individually with Panels/Page manager? Is there any way to create panels template for comments (comments attached to node). So far I've only found that "Node comments" thing under the node tab (Variants -> content) which outputs default comments and Mini panels block which renders only one comment from random node.

I'm trying replace forum node template with panels and render node and comments with same layout.

Thanks.
There's no out of the box solution for doing this today.

If you look at a file like ctools/plugins/content_types/node_context/node_links.inc you'll see how it's done for nodes and their links. The other files in the same directory do the same but to different pieces of nodes. For historic reasons, there's a lot of Node specific content in there.

Today it should be possible to generalize the same approach onto all entities, but as far as I know, that hasn't happened anywhere.