Is it possible to merge 2 requesters?

Is it possible to merge 2 requesters?

I have an issue where one of my requesters is in the system twice. I have some tickets under their original requester name. Then they emailed the helpdesk and their email address was not entered under their requester profile so it created a another requester with the same exact name.

Is it possible to merge these 2 requesters together?

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