When you add a task currently, you can only add columns with one date. So if you have a timeline, it needs to be two columns (which is painful) and it won't link to the Calendar view - to do that, you need to go into each task where suddenly there IS a timeline feature called "Dates" where you can add start and end dates. Why is this not an option as a column? Then you could add all the details without going into each task as a page. It should be intuitive to add a timeline as a column that can then link to a calendar view. It seems crazy to me that this isn't an option. I will say I am trying to re-build a board I have in Monday.com that works very well, so as a direct comparison, it's not very intuitive.