Not directly, but you can email (or use Dropbox, Google Drive, etc) the save to the other person to host. Or if you are not far into the game, you can just restart with the other person hosting.
Each save is a folder in the '..\Documents\Larian Studios\Divinity Original Sin 2\PlayerProfiles\<ProfileName>\Savegames' folder. In Windows Explorer you can zip a file or folder by right clicking on it/them and selecting 'Send To | Compressed (zipped) Folder'.