Well this is pretty cool and wanted to share it.
The DJI RC 2 works with an external USB C touchscreen!

The monitor is powered by the DJI RC 2. through the monitor it is also possible to power the DJI RC 2, just tested it today:
https://youtube.com/shorts/qo7Zyub2pbU

I’m using the Lenovo ThinkVision M14t here, which is a bit expensive, cheaper would be the Lenovo ThinkVison M15, which is bigger, but it is without touchscreen.

I’m hoping that DJI makes the DJ RC 2 compatible with the DJI Mavic 3, seems to me, looking at the specs, that they just need to update the firmware of the controller to make it work with O3+

Hi there. Thank you for reaching out. We appreciate you for sharing this with us. We will gather this feedback of yours about the DJI RC 2 compatibility and forward it to our relevant team for future consideration. Should you have other inquiries, feel free to contact us. Thank you for your valued support.

Thank you for making the relevant team aware to consider this compatibility (if technically possible)

Very nice find and thanks for sharing.  

Great find!  Thank you!!!

Interesting find!

Would there be any way to use the USB to mirror the screen to a phone while flying? (Just so my spouse can see what I'm seeing mainly)

djiuser_WXATy4R2hj1X Posted at 12-5 15:33
Would there be any way to use the USB to mirror the screen to a phone while flying? (Just so my spouse can see what I'm seeing mainly)

Hi there. Thank you for reaching out. May I know what remote are you using? Thank you very much.

As shared previously per VisioAer, the RC 2 remote does work with external portable screens like the Dell C1442H. The portable screen may not power on simply following connection to the RC 2 via the USB-C port. HOWEVER, If it is connected to a power source through the alternate USB-C port, it will stay powered even after it's disconnected from said power source. This was also tested on the ThinkVision M14. Somehow. The screens need a sort of a defibrilation to open an internal power bridge. Works for me. Now I can use a 6ft cable to allow a secondary viewer to enjoy my Mini 4 Pro lens. Cheers.

Nice! I was looking into this as well! This is so useful for setting waypoint missions and not having to use the small screen with fat fingers