Does severance delay my unemployment claim? - what worked for you?

I was offered severance of 4 weeks after being let go as a paralegal and I am unsure how it affects benefits. I have read a lot of threads here and could not find my exact situation. I have a mortgage and need to plan. Did you file straight away?

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

I filed on day one anyway and reported the severance honestly. The agency decided what to do about the timing.