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

I was offered severance of 8 weeks after being let go as a project coordinator and I am unsure how it affects benefits. It has been weighing on me all week. I have a mortgage and need to plan.

Keep everything in writing and save the confirmation numbers. It saved me later.

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