I think we are saying similar things, but I'm getting the sense that you don't think there is a single unified theory to be found (not simply that humans are incapable of understanding it). Do you have a particular reason for thinking this?

I (and Penrose, I believe) like to think that there is a unified theory out there waiting to be found, because the alternative is that reality arbitrarily behaves in different ways in different situations. If that is the case, then fine, but we've made so much progress in science already by assuming that physical laws are universally applicable and not arbitrarily varying.

To put it another way, I reversed the premise and conclusion, Penrose think there is a unified theory, therefore there is a connection between consciousness and QM phenomenon that we don't understand. But you claim that Penrose doesn't understand A&B, therefore thinks there is a connecting universal theory.

Maybe it's a minor nitpick, but it caused me to question why I think there's a unified theory out there, which was good mental exercise.