Similar opinion here. I had a lot of trouble grasping the idea until a minute into the video where you show the timeline aspect. I'd try to explore some other UI layouts. There's something a bit off in making a user click the graph, move eyes down to the timeline, then back up to the article.

(thinking aloud, Perhaps de-emphasize the graph (make it smaller?) and make the timeline vertical / leftish-center? then give the article more room for reading. Or possibly put graph&timeline at top then the article below so the article can be viewed in full & scrolled without any frame windowing.)