It has been more than 3 months since my relative applied for a B1/B2 visa with a Russian passport. They went to the interview, but didn't get an answer yet. In the past, it always took less than 3 months to get the visa, and it has never been refused.
My relative is receiving a European citizenship next week, and could then theoretically travel under ESTA. Should they first try to cancel the B1/B2 application done with the Russian passport before applying for an ESTA with the European passport? Any thoughts/considerations? Any experience with withdrawing a visa application?
EDIT: adding the information that they already went through the interview and received a 221g refusal form requesting for more information, which they have sent more than 3 months ago.