Re the dream time, I think the actual time spent processing certain key events is very minimal and the rest is the mind creating an assumed story to go with it, which is why we can say we know certain people one minute and they change the next etc, but the room hasn't or the general feeling of the dream.. or mood.
I've had many vivid intricate dreams that seem to occur in no time, but I can rarely recall the 'sequence' that connects the many subtle changes
I think also that we're far more limited than the speed of light. It is true that in an infinite universe there is somewhere that light has not
reached, so in effect reality has not happened for it yet. But we're unable to see beyond the dark spaces between everything that has become real.
I really can't say though, given that in theory two people can experience the same event at separate times which is effectively time travel, so it
does my head in going there.
it's a shame I'll never know. What the infinite reaches of space appear like. But then, infinity does not require randomness to be infinite... It's
probably easier not knowing.