The answer is here above:
So if you copy the instances to your laptop first, you can then use Briefcase to pull and export them into a single CSV (and export any media files).
To be honest, I am much more Luddite - I don't use adb, I just plug my phone in to the laptop and copy the instances folder to a drive on the laptop then use Briefcase...
It would all be much easier if Briefcase was allowed direct access to the phone (i.e. if it were recognised as a drive) - but this is a very old problem. And there is then the issue of managing that space on your drive:
Hope this helps.