Loading OS from Nvme but uboot from emmc?

From this page I found we cannot boot rockpi 4b from NVMe, but can we put OS on nvme and uboot on emmc ?and boot from emmc to load OS from NVMe, not sure if that would work, but I want to know before I try. I have got emmc, nvme, emmc adapter .

pardon me for my ignorance.

Please suggest.

Yes, you can put OS on nvme and boot u-boot on eMMC. Just dd the first 128MB of image to eMMC and full image to NVMe.