It doesn't turn into literal flesh while it is being consumed. I mean, it could happen, but the chances of a miracle to happen like that I don't think would be likely at all.
The Catholics do believe that there is more to Christianity than just the Bible, but it is still of course extremely important. But I have no other arguments, I would gave to reread parts to make extra sure.
That is pretty clever thinking, but no. I mean, technically he is if the Eucharist is here, but not how you are implying. That is a pretty good statement though.