Orion, unlike Safari and practically all updated applications, does not allow you to open more than one window at the same time using SplitView & Multitasking. The absence of this feature makes the app feel a little outdated.
Adding this feature gives users on iPadOS unlimited possibilities: the ability to make research faster by comparing two windows; to write a post on the Orion blog and at the same time see a YouTube video; to translate something in one window and search another thing y another window; to ask something to Kagi AI and be looking at images from Shrek, etc, etc, etc.
Adding this feature does not affect users who want to continue using Full Screen, SplitView or Multitasking (all can be used with Orion), it only gives them the opportunity to multiply the Orion windows they have open at the same time
As I noted above, adding this capability to the Orion iPad app provides virtually endless options to improve a person's workflow.
Sometimes switching between tabs is not as useful or comfortable as being able to see two tabs at the same time when browsing the web.
I have not had the fortune of using the Orion application for Mac, but I am sure that this feature is already implemented for that system, it would be a matter of importing it to the iPadOS version.
There are thousands of examples of applications that use this feature. I think Safari does it very well, because it implements the possibility of dragging a tab from the top bar and making a new window in SplitView or Multitasking mode.