What everyone else said, plus:

Fresher beans cook faster. So -- this is really good! You're getting high-quality fresh beans, rather than old beans.

I looked at how you're prepping the beans as well, and you're doing a lot of things that will make them cook faster. Soaking overnight is one of those steps, but parboiling is also one of those steps. Typically, I'll skip the soak-overnight step, boil my beans for about five minutes, let sit for an hour, drain, add fresh water, and then cook for about two to three hours.

So yeah, you're fine! (: