Thank you!
To make sure I understand this point:
If the indexed folder is synced by Dropbox to both computers with the same relative path, and the database is synced by Devonthink to both computers, then on each computer the “Show in Finder” command will point to the local copy of the Dropbox files?
If Devonthink defers to Dropbox in that way, and “sync contents of indexed files” is on, then where are those contents synced so that DTTG can access them?