I do find it surprising you weren’t asked any questions about your relationship with him.

Certainly where I am (different country) that hug alone would’ve been enough for action against him, we have very strict rules around touch between teacher and pupils. As an adult I’d certainly question his motivation although of course it’s impossible to say whether he was grooming you it does fit with known grooming behaviour.

I think feeling confused is normal. You’re looking back as an adult but how you saw things as a child is likely to be different.