that’s something I’ve been curious about ever since I saw this thread and the linked john kempf video
the tl;dr being sources of nitrogen and levels/timing of calcium application might have a strong influence on node count and spacing, which dyna-gro also claims on their product page for their 9-3-6 foliage pro. And like you said, it might also affect cannabinoids
It really makes me wish osmocote would release a version of the plus with calcium and little/no ammonical nitrogen, it would be the perfect one stop shop for cannabis growers