Threads?

Hey,

I have a question: I created a Threads account with my Instagram account. I've never had Threads before, but it's very connected to Instagram because you can switch back and forth between Instagram and Threads directly in the app.

Now my question is, when I created this account, I immediately had a few followers that I already knew, but not all of my Instagram followers. Why is that? Is this normal?

And: what do I have to pay attention to so that my Threads account is the same as my insta account?

Sorry for the difficult explanation but I couldn't explain it better

LG Johanna