The subspace is always stated to be between dimensions in guides; in the show. Executor translated the subspace scan for us and it was said that the subspace isn’t shown in figure 1. Figure 1 depicts the macrocosm and that the subspace was between those dimensions of the macrocosm. The subspace definitely is apart of the macrocosm structure.
The time chamber doesn’t account for the entire macrocosm it only accounts for the
Living
World. The Oracle fish makes a prophecy of the strongest person in Universe 7 and it doesn’t refer to Granolah. Even though, Granolah wished to be the strongest in the Universe.
Also, please don’t tell me this is about that one RoSaT argument. That argument is really iffy and if we extrapolate it it’s not even consistent to the series to argue it’s that durable.