I think that you need to have absorbed Adastra to make sense of Echo and the Smoke Room. The underlying concern in Adastra is the encroaching Darkness, which threatens all existence. We are told that there are fragments of Darkness scattered through the galaxy, and Echo plainly has one of these, activated by the mining work. The Adastra universe is layered, with the the "Parents" occupying a level that only the Darkness touches, and the intelligent species living in the material world, a layer 'down' from that. The Parents generate useful technologies for these species, and manage much of their lives, much as the Darkness impacts on humanity in Echo.
It is easy to spin a narrative that links these two. Imagine that Chase is the kidnapee in Adastra, finding his super-wolf and acting as a probe for the Parents towards the Darkness on Earth. He is selected precisely because of his Echo-derived public on-line profile and his ease with wolves.