[fel64]

There are a few things you can do. This WP plugin will, using also the bbPress Post plugin, show replies from the appropriate thread in your forum under your newspost, plus links to the thread to reply to it. You can also transfer existing comments; you need to be careful to only do it once, but that can also be found in that thread. It hasn’t yet been successfully made so that you can reply to the forum from the wordpress part of the site, as far as I know, but I’m sure it’s possible and will be done.

So it’s perhaps 2/3rds of the way there.