Does multisite login carry across sites?

If a user logs in to site A, then travels to site B within the same multisite network, can they access “member only” content on site A?

(I’m hoping the answer is yes.)

I want to use a subdomain for Ultimate Member features like registration and logging in. And I want private content on my main site.


For speed optimization reasons I don’t want UM installed on my main site.

So… can users who register on my subdomain access content on my main site that I’ve roped off for logged in users?

I’m roping both sites together using Wordpress Multisite