sync or replace wordpress comments by buddypress comments

I would like to use only the buddypress system of comments for all the site, this include the wordpress post comments.

I have seen that I can add the comment in the activity, but I in this way one post must have 3 comments threads or more:
1 thread for the wordpress post-comment
1 thread for the buddypress activity-comment
1 thread for each wordpress comment that generate one activity update

Another problem is that buddypress and wordpress have different way to subscribe by email: buddypress by default and wordpress by plugin.

I have search and found this track:
and this hope by @Sarah_Gooding : "Better two-way sync of activity comments with sources like forum replies and blog comments"

Can I do somthing for use only the buddypress comments in activity update and blog post?