Possible to merge two accounts?

Somehow, somewhen I created two Norton accounts. They differ by primary email address. I think it goes back to a problem with Norton Password Manager or whatever it was called 20 years ago. Anyway, the primary account (the one that keeps track of the money) has a no longer valid email address. Of course, when I try to change the address (which of course is also the account address) I’m informed that that account already exists. I’d like to merge them if possible. Is it?

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