Yesterday I was experimenting and came up with a page that places Desmos and GeoGebra side by side. My screen resolution is 1920 by 1080. I hope and plan to experiment with other sizes.
This experiment is just a stage in my quest of packaging lessons that involve both piece of software in an internal dynamic manner. I do not suppose I will ever get them communicating with each other, but at least I can set it up so that the teacher (or student) has a seamless way of using both in the same lesson.