The flow is a wonderful feature to easily switch between devices in just in a few minutes, but it has problems, especially with the mouse. It could take some time to switch to another device, and it could even not work properly or quickly switch. I have sometimes glitched that it stuck on the edge of both screens.

So my suggestion is: could we switch keyboard and mouse together, not moving the cursor between screens to switch, but just pressing device connection buttons on the keyboard. It will switch to another device's keyboard and mouse together. This will be a much quicker and easier method to switch, especially since this button is in front and easy to catch. This could be an external feature that does not replace the current flow but could be an extended feature for flow or even separated. You can connect the keyboard to the mouse and switch together, but I was surprised that I can't do it from the keyboard.