Suppose that ultimately reality was essentially indivisible. There would be no time or space since there are no separate objects to be relative to one another in space or time. In an indivisible whole no individual objects actually exist but there could be phenomena that are continuous with the whole if the whole is not perfectly uniform and is dynamic. In such a reality areas of differing "density" could constitute fundamental phenomena which might then interact to produce more complex phenomena.
Now suppose that a class of phenomena arose within the whole that was sensitive, in some way, to a limited range of other phenomena within the whole. In other words, imagine that these sensitive phenomena could "see" a limited range of other phenomena within the whole. To the sensitive phenomena the phenomena that they could detect would seem to them to be separate objects separated by space (the aspects of the whole not detected by the sensitive phenomena) between them. This would also constitute the advent of time since the sensitive phenomena could appear to move between the objects and they would appear to move closer and further away from each other. Such movements would take time.
With the appearance of sensitive phenomena time, space, and motion would occur simultaneously. Their ability to detect only limited aspects of the whole would be responsible for the appearance separate objects, time, space, and motion. Note, these qualities would only be apparent to the sensitive phenomena and would not be features of the indivisible reality itself.
Could it be that we are such sensitive phenomena and that objects, time, space, and motion are simply artifacts of our limited perceptions of an essentially indivisible whole?