We all have different lives but for each individual our experience is normalized. That we all experience our different conudiouness as normal is the universal Consciouness constant.
This constant is aplicable to everything big and small, and most importantly is irrespective of perception. Just cause we don’t percibe something ourselves does not mean it doesn’t exist. This constant would imply that it does always exist just with different experiences. all that is needed for universal conciousness is experience. This is not inteligente or mental brain material Consciousness, this is universal consiouness as a building block of the universe in all directions based on Consious field theory that Consciousness itself is rooted in the universe.
Experiment can be conducted starting with the relationships between humans with different experiences and then experienced of other life forms. Eventually you could look at experience of non body life like viruses and eventually the entire spectrum of non living decion making even to to decision making within light and electrons.
On the bigger picture, all time moments are fixed and retrievable within that linear universe but in going back to retrieve information from the past we may find the atoms and the world lines, but the conscious experience of the moment may not be present. That would mean that we can replay any past movment but we can only experience a single present moment within the infinite world lines of potentially infinite universes and parallel dementions as they are connected together. A wormhole May just be a connection to parallel universes that don’t naturally connect, but no worm hole is required to connect to any universal dementions that have one or infinite linages from the present movment of Consciousness that either an Indivual or group experienced.