I was only requesting funding for a full fall semester, which might be what ultimately made the difference. It seems silly now, but it didn't occur to me that a full academic year of study abroad - which I wasn't aiming for due to the fact that I'm a transfer with a shorter undergrad timeline - would be preferred.
Does anyone know if Boren alternates are allowed to put that status on a resume? I've seen press releases from schools that announced students who were chosen as alternates, so it doesn't seem like an unreasonable thing to do.