I have 2 sticks I would like both registered to same account so only one set of passes but need more than 2 devices at one time
Device allowance is per account.
You can have two sticks on the same account and watch on both at the same time.
You can't watch on more than two devices at the same time unless you have multiple accounts. In theory, you could have 24 separate devices with the six different passes and watch on 11 at the same time as Mobile sports pass only allows one stream.
I have different accounts for sport and mobile sport as opposed to cinema/entertainment so I have 5 concurrent streams. Bit of a pain to log in and out, but everyone is happy that way!