Question for International Transfers!

In the FAQ, it says that it’s required to provide my secondary schools report, but only “asks” us to provide an international supplement. Then in another section, it says that both aren’t required, only recommended. My high school isn’t the most responsive/helpful, so other than the actual transcript, would it be absolutely necessary to ask them to fill out the report + supplement too? Would doing so affect admission decisions?

Has anyone been admitted to Brown as an international transfer, without the secondary schools report AND/OR the international supplement?