Obscure because it stopped mattering after we left inventory shenanigans behind — it is actually possible to merge items from two different captchalogue cards in the Sylladex, causing them to occupy a single card and freeing up inventory space in the process. (> John: Combine the nails and hammer.).

The limits of how many items may be crammed onto a single card like this are presently not known, but it is known that trying to merge items from cards that aren’t adjacent to each other causes the items in all the cards between them to also get swept up in the merger — which can make for a very unpleasant mess.