Severance and unemployment, do they overlap? - first time posting

My employer is paying severance in instalments and I am not sure whether to file now. There are 15 people counting on me, so I am trying to be careful. I have a mortgage and need to plan. Did you file straight away?

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

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