My macbook pro is connected to a Dell P2715Q. Using an external keyboard (Matias QuietPro) and mouse (Logitech MX Master) I have Telegram, Slack, spotify, etc.

My macbook pro is connected to a Dell P2715Q. Using an external keyboard (Matias QuietPro) and mouse (Logitech MX Master) I have Telegram, Slack, spotify, etc. on the macbook pro screen and I have my web browser and IDE on the Dell side-by-side. This setup is relatively new, previously I was only using the laptop screen. It is working great for me and my productivity has definitely increased.