@BeAware this is creating an account but also linking them.

How are there two signups? You already have a mastodon account.

The flow shown here is if I am not mistaken:

1. authorize access to your mastodon account.
2. create a new account, presumably authorized by 1. and I note, still requires yet another account - email.

or

1. create a new account
2. decide whether you want to link it to your other account or not.