Ik it's a little different but for the recent SWO board:
Some fleet applicants reached out to a Chief about their packages prior to the convene date. He responded with "yes your package was received but we are short a fleet processor which is why you haven't heard anything back"
Basically, the workload just shifts and Chief was really busy processing a lot of late minute requests and packages. And he posted the at-board list very last minute and some people who submitted last minute packages were not reflected on the list. A few applicants thought they submitted because their recruiter said so but never actually got fully past the processor stage. So for our board, he accepted submittals/corrections a day or two before the board convened.
So you gotta make sure you reach out ASAP (today) about the status of your package to make sure it gets reviewed at this board.