Cannot use extended screen on iPad Air
I can only use iPad Air M3 with iPadOS 26 in mirror display, not extended. I want to display one window on my iPad, e.g., Google Classroom assignment, YouTube video, Google Doc, or PDF, to the classroom on the external monitor in extended display mode, and still view, for example, see a seating chart on the iPad and not broadcast that window to the class. However, support informs me that the iPad must be tethered to an external monitor via a cable connection to enable extended display. Please tell me this is not true! I thought iPads were for mobility in a classroom. Apparently, the new iPad will be reduced to using an app to control the extended display function on my MacBook Pro. Better than a doorstop.
iPad Air, iPadOS 26