Hello 

I would like members to know when there is a new article by adding a limited number of characters of that post to timeline. But... My problem is that when I post a new Article the timeline posts the entire post rather than limiting the number of characters on timeline. I reduced the number of characters for Articles in the app settings but it has no effect on timeline.   Is there any way to limit this?

The setting which you've changed in the app (Articles, Posts, etc) controls the preview inside the app only. It relates to browsing pages like Latest, Popular etc. 

In the same time Timeline takes the whole text of a post/article/discussion and display it in its own card. Timeline doesn't have any setting to limit the size of the text which was taken from content app. In this case Timeline uses 'See More' to avoid very long texts.