Using Universal Control on macOS Ventura, you can utilize your iPad as an external monitor and operate it with your mouse and keyboard. You can easily transfer files by dragging pictures from your iPad's Photos app to your Mac's desktop. However, this feature does not seem to work with Affinity Apps, as attempts to drag and drop files were unsuccessful. Specifically, the following actions were attempted and did not succeed:
1. Dragging an Affinity document from the iPad app to the Mac
2. Copying content in the iPad app and pasting it in the Mac app
3. Saving files from the iPad to the Mac.