Correct me if I'm wrong, but I still see the repost + the original note in my feed if I follow the author. Is that part still needing deduplication?
Discussion
The procedure right now is a bit complicated, but it will always show if it is over a day and/or you have not seen the original post. When they are too close to one another, the feed algo might load more to make sure you see it, but if you pull to refresh they disappear.