Hey there! @lmartins6746, another community user was having similar issues.
Please refer to this thread to check out some of the troubleshooting steps to try: Scenes missing and device duplication in Google Home
Additionally, I believe that assistant routines need to be set up separately on each device. Having access to the scenes and the devices, you would have to create an assistant routine for each use case on both devices.
I hope this message finds you well!
^SamsungZell