– By using the key sequence <Shift+F11>, open two windows of the same project plan file, get rid of the Timeline if the default new view includes it. – Arrange two windows (Project_File:1 and Project_File:2) vertically so as to share the application space, then open the Task Form/Notes on the right,and open another sheet view that you want on the left. But they won’t be interactive like it happens in a combination view.
I use this configuration all the time, and if you have two monitors, you can extend the Project application window toward the 2nd screen. I hope this works.