Update: Just tried it - yes it works! Just pair second drone with same RC2 and fly same mission. Can be a very useful feature.
Yes could be an issue with pairing a different drone to the initial controller and CareRefresh for any lost drone if you don’t bind it to the controller. But with a few taps you can bind and unbind the drone to the controller. Hope this helps!
Aah that’s an extra complexity! I see on other DJI forums a request has been made that swapping from RC to Googles and back should be made simpler - they have the same binding issue as using 2 different drones with the same RC.