Hi@juanmolina,
It is the first time that I have heard of the "elevator pitch" and what surprises me the most is that it has happened to me many times and with a short speech I have managed to capture the necessary attention to "sell an idea or an initiative".
I am pleased to know that I did well without knowing the protocol that you describe perfectly in your post.
I do not make one like the one you request because I must think about my best cover letter at the moment, but it is enough for me to know that I was not wrong in the past and in your post I find a kind of "mirror".
I am increasingly surprised by the treasures published in Hope.
See you soon
I feel blissful to know it.