Is there a way to combine 2 Xbox accounts?
You can't combine or merge Microsoft accounts, but if you have multiple accounts, you can share your Xbox subscription and content on your Xbox One or newer console. To do this, make sure that all of your accounts are on the same Xbox console, and then select that console as your home Xbox.
Can you merge 2 Microsoft accounts?
Unfortunately, it is not possible to merge Microsoft accounts. However, you can delete the accounts that you no longer need.
Can you transfer Xbox profile to another Microsoft account?
Nothing can be transferred between accounts. He would need to continue using yours if he wants to keep his information or start over on the new account.
How do I link Xbox accounts?
How do I transfer my Microsoft account to another account?