I don’t know if this is possible with iPadOS 13, I haven’t figured out a way to do what I want. What I want to do is have an ebook open in the O’Reilly app on the left hand side of split view and be able to quickly switch between 2 apps on the right hand side. Sometimes have iA Writer open to take notes, other times have Pythonista open to try out the code I’m reading about in the O’Reilly app.
My current approach is to have Pythonista always open on the right side, but have iA Writer as a slide over app. This works, but I’d really like to have a quick way to switch between 2 apps on the right side of the split screen.