If there is an other nature that undergirds consciousness and if there is 'something that it feels like' to be that other nature, as in panpsychism, then it may be enough, in the sense of being metaphysically complete, that there be such an other nature without the need to posit a continuity between it and your (kind of) consciousness. The latter is not built up in an atomic fashion out of the former, but it is merely supplied with a sufficient amount of uniqueness, of pure distinction outside of any rules. That would bootstrap consciousness as we know it without in any way resembling it, while also supplying enough true otherness to stabilise the world, as matter was supposed to have done. Otherwise we are left with pure or Berkeleyan idealism, in which the there is nothing behind the experiencing at all, and the very question is meaningless.