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528d20b

I also do not recall the graph being like that but the idea behind what you show is cool. I'm working on the graph with @xHeaven for a few days so should not be too complicated to test something: all my environment is setup and ready to test things. Let's try :)
Yeah that'd be great IMO, it's very confusing atm that all first-replies to a post look like they are replying to each other.