Display multiple prj site in one view

Suppose I've 3 prj sites which is used to maintain a prj task

• Prj A
• Prj B
• Prj C

And in each prj, they have their task

Prj A - Task A.1 Prj B - Task B.1 Prj C - Task C.1

Is it possible to have a view which can display all the prj tasks in one view where Gantt view is also supported?

I've tried to combine 3 data sources into one. However, I can only use the combined source to create a very fundamental view (just a plain table only). Is there any way to display it in a "traditional prj task" way?

Or said in ano开发者_Python百科ther way, is it possible to change the data source of a Prj task? If so, can I then change the Prj Task data source to my combined data source?

With OOTB it is not possible to show a Gantt chart for the multiple list view. Either you can create your custom webpart or look for a third party solution.