Feldspar's recording on Giant's Deep mentions their eagerness to report back to Hornfels, their note on Brittle Hollow addresses Hornfels, affectionately calling them a burnt marshmallow, and some of their dialogue in the Bramble acknowledges Hornfels' concern for them and their ship, and involves them doing an impression of Hornfels' voice.

And then, y'know, right when everyone is about to up and force the two of them to Have A Talk, Feldspar goes to Giant's Deep and then gets lost in the Bramble?

feldspar 6 x hornfels 3 wip

have I mentioned that feldfels is my favourite ship