Since working from home, I’ve been using an external monitor more heavily. The light in my office changes throughout the day, and I found myself adjusting the brightness on my Macbook and external monitor separately.
I started looking for a utility that would link the brightness of the MBP and my external monitor, and I found Lunar.
In sync mode, the brightness of the laptop and external monitor are linked, which means I only need to adjust one brightness level for both.
It’s neat, you should try it.