My Excel is indeed running natively, but I did find via Activity Monitor two other leftover things that are Intel that I should either get rid of, or update. I

My Excel is indeed running natively, but I did find via Activity Monitor two other leftover things that are Intel that I should either get rid of, or update. I doubt they're the cause of any significant battery drain compared to Chrome (actually Edge now, but I doubt it's any better given the Chromium base), and I have other Intel software without Apple Silicon alternative, but it was still a useful thing to do.