Absolution Section 2, Chapter 012 "Old Decomp": Am I crazy, or...?

This is the chapter in which Old Jim and Cas are given the location of the old materials relating to Dead Town. They find them in a warehouse stacked high with haphazard dead things, and are left with a message "Happy Jack."

Am I the only one who got major vibes of the Hummingbird Salamander taxidermy warehouse from that, with Jack sending a message of petty outburst feeling remarkably like the behavior of that novel's "Jack" as well?

Of course, I know the two aren't meant to be strictly connected, but I could easily see these elements being the slightly altered parallel of those, through one of Dead Astronauts' Company's Wall of Globes.