Is there a way to display only part of the post content on the timeline instead of full content
Yes there are 2 ways.
1) Use excerpt field. What ever you add in that filed it will be displayed on your timeline instead of your post content.
2) The second way is to select which row to be displayed on your timeline and which on your full post page
:: Cray Themes Support ::
professional web design & development
Envato Market:: Themeforest
Envato Studio:: Hire Us
Mail :: firstname.lastname@example.org
Web :: http://themes.cray.bg
Twitter :: http://www.twitter.com/craybg