Normally, I think there would need to be some sort of connecting form (て、し、り、など)before the comma on your example #2, as noted by Darius Jahandarie.
If you do need to combine sentences like in your example #2, you would probably want to find a way to clarify to the reader (or audience) what you are really wanting to say, as well.
For example, you might want to add some sort of noun or phrase after each という (or at least after the last という) so that the reader (or audience) knows what you are trying to say—otherwise, the example #2 sentence makes me wonder if you mean the A thing... or the B thing... (unless you explain how A and B relate—perhaps A and B are a respective series or are labels of something?)