I would say that's beyond the current scope of our inquiry. It's an interesting idea. As was mentioned, there are precedents for joint House of Commons and Senate committees. In the U.K. they have something called the Joint Committee on Human Rights, which is a joint House of Commons and House of Lords committee that's been quite effective.
On having two chambers try to debate bills simultaneously, however, I'm not sure if I've come across any international examples of that.