I saw on the Harvard application tracking portal that there was no indication of whether my supplemental recommendation ever made it. I had it submitted through the Common App, but I guess there’s always a chance it didn’t properly go through even though it said that it did…
I know that some other schools on their portals will only list required items, so I’m hoping that would explain why my supplemental recommendation from the professor I worked with this summer doesn’t show up, but if anyone knows for sure, that would be great.