Is it possible to mere Nintex databases from multiple SharePoint farms, to migrate to a single new farm?

We have 2 SharePoint farms. Both SharePoint 2013 and are trying to migrate to a single SharePoint 2016 farm.

Both SharePoint 2013 farms have separate Nintex configuration and workflow databases.

Can we merge these databases together so that we can move all Web Applications and Nintex workflows from both SharePoint 2013 farms into a single SharePoint 2016 farm environment? Can multiple Nintex databases exist?