Since a year I am quite active on SO and a bit on meta, but I have never heard of the timeline of a post, till today in a comment on meta.
This feature has been requested by a user half a year ago, answer: this exists, but the link has to be built manually.
I think this could be quite interesting sometimes and I would like to use this, but I will not, if I have to build the link each time by myself.
This feature is now existing for two years and still "experimental"? Who is using it? Who knows about it?
My feature request: Implement a link in the posts to their timeline, I am sure this nice feature will be used.