If you've seen The Animatrix -- specifically "Last Flight of the Osiris" -- then you might know what I'm talking about. The Osiris, after encountering an unusual amount of squidies, somehow managed to make it to the planet surface. There were millions of Sentinels flying around, and even starting to position those huge drill machines. They were witnessing the beginning of the huge attack on Zion in Reloaded. I dunno, but I don't think the machines would create a submatrix or whatever you want to call it and have the humans be able to see so much into the 'real world.' If anything, it'd be a major tactical error. I'd think a 2nd matrix would kinda keep the humans running in circles like hampsters, not allow them full access. Just an idea... Oh, and if you haven't seen The Animatrix...wtf are you waiting for?