Is there a limit to how many devices you can log into Netflix on?

My brother has a family subscription with his 3 friends. There are 4 accounts.

My brother gave me the login information that I can watch Netflix on his account.

I gave the data on my cell phone, my laptop, my TV, and 2 friends of mine (both only watch on the TV).

It's ok for my brother, but is there a limit to how many devices I can log on to?

(added to all the other devices my brother and his friends are looking at) that would have to be many. I only know that you can watch on 4 devices at the same time.

It differs per subscription how many devices can stream at the same time. It doesn't matter how many are registered.

And the number of download devices

Thank you