First of all, I absolutely love Notebook.ai. I´ve been using it for over a year now and it has helped me a lot.
I understand this might be complicated to do but I would love to be able to open 2 or maybe even more timelines in some sort of timeline comparison so I could easily look up when certain events overlap or influence each other etc.
A second thing that might help is to be able to not only reference timelines in other timelines but to reference specific events from one timeline into another.
Very curious what others might think of this :)