Just checking: am I correct that there are two AskLemmy’s?
https://lemmy.ml/c/asklemmy https://lemmy.world/c/asklemmy
If so, is there any way to bring communities with the same purpose (or even same name) on different instances together? If not, how can we prevent fragmentation of these communities?
There currently is no way - and in my opinion should be no way to prevent duplicate communities across instances. One community will eventually become popular enough to be considered the de facto community, though we shouldn’t force interaction with an instance simply because they have dibs on a community name.
Less discerning users can subscribe to both communities.