Is the "refresh token family" shared across browser tabs?

Hello,

If you’re using the default in memory cache location, tokens are not persisted across tabs or page refreshes.

So when we reload the page or open the site on a new tab, the user is given a new access token and refresh token.

My question is: are all these refresh tokens (across the tabs) under the same token family?

I’m looking at the refresh token value, and I can see that there’s a prefix before each one e.g. “v1.”.

Is the “v1.” the “family” that these tokens are under?

Thanks!