When my son had his LOA last year, he forgot to mention it to one of the senator's nomination team when he met them for the interview, and he did not get his nomination. He made sure to casually mention it in the interview with the congressman and our second senator and he got both nominations. He was advised to not mention letter as a bragging topic but to casually mention it in his closing statement.
As a mama of 2 OG's - one with no LOA/LOE and one with a LOE who both were star men, star and wreath men - live in the moment. Embrace all opportunities. We spent too much time wondering and speculating. Both ended where they needed to be and continue to flourish.