TB -

As you can see by my original reply just above yours...we seem to be on the same page as to what probably would have happened had Tessio been successful in having Michael assassinated. The only thing that I disagree with you about is Tessio himself. I really think that eventually Barzini would have had Tessio killed because of the reason that I cited in my original post..., the fear of Tessio turning traitor on him (Barzini) in the same way that he turned on the Corleones.