Severance and unemployment, do they overlap? - what worked for you?

I was offered severance of 11 weeks after being let go as a bookkeeper and I am unsure how it affects benefits. I have a mortgage and need to plan. Who should I ask before signing?

Before signing, I asked a friend who is a lawyer to look at the agreement. It was a short conversation and worth it.

Some states only count certain kinds of severance. A local workforce centre could tell me which.