Lengthy exposition breaks spoken by each Wayfinder when they are revealed.
Yet again, I think you’re accidentally onto something Hal. 😉
The illusion aspect of the central crystal could be mirrored in the wayfinders. For example, the stone container holding the first wayfinder could at first appear like a simple boulder, but a voice whispers in Kylo’s head and the illusion is removed. Similarly for Rey’s wayfinder, the pillar could enclose the entire thing until she reaches within it to extract the tetrahedron.
In the final confrontation, Rey would call upon the spirits of the Jedi to be with her and they would help remove the Sheev illusion to reveal something like a big, much more important-looking wayfinder. This would link them all and explain the illusion without ever needing dialogue.