The big bang theory must have had a high temperature at the start between the microscopic/quantum through inflation stages. Then it is theorized it grows cold enough to form atoms and go through annihilation of anti matter - that is followed by an opaque dark era before stars ignited with light. We have not ever seen beyond those dark ages of the opaque stage.

{My wonder is if the James Webb telescope can detect heat signatures before/farther back in time, before the opaque era. OR an entirely new surprise is seen.}

The inflationary period where space expanded beyond known velocities is a strange period. I always believed contrary to most cosmologists that it was time that was distorted by mass density and took much longer than a new york minute to reach an expansive space. To be fair space can move faster than light inside of black hole horizons.

In a way we may be able to see in reverse space move beyond relativistic speed but the Webb may see stranger things that I can imagine for sure. Everyone in the field is making their best guesses right now. Some guesses are beyond my understanding and some are too wierd for this ol country boy.