When opening a capsule from a command line it is possible to control the server/host, capsule and screen to be opened, along with telling it to 'auto-connect' using either /username and /password, or the /sso switch as described here help.board.com
When embedding via iframe it is possible to also set the capsule/screen, but I'm wondering if there is an way for the user to auto-connect using sso/windows account. This KB article (KB Article) doesn't mention it so I'm not sure if it is possible or not.
Below is what currently pops-up to login, and we're wanting to see if this can be avoided.

Any help is appreciated.