@anon13627270, your Portfolio Timeline only shows projects that have due date or date range but it’s currently not possible to see all tasks on each project in one Portfolio Timeline view. I suggest you to add your vote to support this feature here: Show tasks and milestones per project in Portfolio Timeline
As a workaround, you can create a master project and multi-home all tasks you need to see in one Timeline view.
@anon12607776 we don’t have any updates about this feature at the moment but we’ll make sure to post an update in this thread as soon as we have any news: Change Weekends in Calendar/Timeline View According To First Day of Week. Don’t forget to cast your vote!