Yes, severance is a continuation of your normal bi-weekly paycheck until your severance expires.
However, I don't think the severance period counts as service credit for building up your pension. Read the summary plan description for your pension plan. In any case, there should be some sort of increase in your monthly pension check for any time you wait to start it, including being on severance. That would be an increase due to your increased age and therefore decreased life expectancy.
Also, you would not want to start your pension until after your severance is used up, because going on your pension will stop severance.
Maybe the OP has this confused with taking your 401K and/or lump sum pension. While you have the option of taking a lump sum, that will probably increase the tax hit compared to taking distributions over a number of years. Which you also have the option to do.