But the conversation is unique in each community. And each community may not have federated to every instance. This is the Fediverse, not a single site with sub communities.
I do think it would be nice if a client/backend could:
- Take any cross-post link from the main post
- Query any description/comments for cross posts
- Add to the currently displayed comments
- Tack on descriptions as comment blocks with an @ to the cross posting OP to the displayed description
- Mark cross-posts as read when main is read
This would be easier in Lemmy, but could be done with a client, Thunder might be interested.