I apologize that you never received a response to this post (until now). I was just scanning through the forum posts and spotted this one.
Yes, it is possible to put 2 components on the same page.
Were you able to resolve this issue back in April? Without more details about the error message or seeing what you did with the template file, it is hard for me to speculate on the problem.
But, it *IS* possible to put 2 components on the same page. I just ran through the steps myself and was able to generate the following using a Document Template: