How not to show individual comment activity in the activity stream?

userA commented on the blog ABC 2 minutes ago
some comments
userB commented on the blog 10 minutes ago
some comments

How not to show the above in the activity stream but just show

userX published a blog post ABC an hour ago
userA 2 minutes ago
some comments
userB 10 minutes ago
some comments

Feedback and Planning

Feedback and Planning

Discussions about the past, present, and future of Elgg and this community site.