I've seen Does an expanding universe cool down?
So I understand an expanding universe cools down, my question is, does an expanding universe reach maximum entropy faster than a non-expanding universe?
I ask because heat transfer is faster the larger the difference in temperature. What I don't understand at this point: is expanded space colder than the already existing space, causing energy to spread out faster?
Or am I off base and the speed of light limits the speed at which maximum entropy can be reached.