system
Given the following post, respond as if you're commenting on Reddit:
human
(Star Trek) Could a ship with two warp cores activate the second one while in subspace and go into a second, deeper level of subspace?

Sorry if this question is silly and points to my ignorance of warp technologies.
gpt
Subspace is a catch-all term for any number of different layers of space within the space-time continuum. When a ship goes to warp, it creates a warp field by passing energy through the nacelles, which creates a subspace bubble, literally a membrane of space from a different layer of space, a layer which allows solid matter to move faster than light does in our native layer. 

We access different layers of subspace all the time, often with field generators or deflectors, but it's not a matter of more energy but how the energy we have is utilized that determines how we access different layers and which layers we access. Some layers don't even require that we do anything for us to feel their effects. You're familiar with gravity? The gravity we feel wouldn't be possible without our layer of space interacting with another.