You’ll have to ask someone that has a degree in this field. I can’t tell you details. I did watch a lecturer on what triggers seeds to sprout, and it’s complicated. It’s way beyond my scope to explain. Different environmental conditions trigger chemical reactions in the seeds, some of which stop germination, and others that promote germination.
Untended hazelnuts almost all get eaten out by a filbert worm. Wild ones are not worth the effort to gather and crack. Inside is a nut meat the size of a pea.