I agree, there is certainly a clear operational difference in how human brains and these models produce language. I'm not convinced, though, that experiencing real time is a requirement of conscious thought. A cognitive system (assuming these models and the brain are both examples of this) needs to proceed from state A to state B as it processes information. The time interval between these states can be arbitrary, it seems to me (setting aside problems with disconnecting the mind from its substrate, which does of course need rhythms at various frequencies; oxygen at a higher frequency than sugar, and so on). I'm not sure that going from A to B quickly, or slowly, or with intervals of a thousand years affects that entity's consciousness in of itself (even though it might be difficult to put ourselves in the shoes of such an entity).