The 2nd sub-density of 4th-density

[zenmaster]

That is true, they did not actually say "same" in that particular quote, for what it's worth. You, being inherently one thing with a single identity, can be separately related from either a spatial- or temporal-identity perspective. The perspective does not change the inherent mutual identity. If something is as much of one thing as it is the other, then at means they have no difference obviously.