interpretation

I have a question on Autocorrelation of OLS model. So I encountered a autocorrelation error, and use Cochrane - Orcutt Two-step Procedure(CORC) to fix it. And my OLS became GLS. And I have no idea how to interpret the coefficient on my initial X and Y with the new model. I mean something like...

Hello everyone I watched David Harper's videos on Key Rate 01, but he uses spot rates, not par rates like in the example of Tuckman. I have problems understanding that example, maybe someone is kind enough to enlighten me a little? 1. Why are par rates used as key rates and not spot rates? Is...