Question AM4 motherboard with processor without integrated graphics gives video in BIOS?

Hello! Recently, talking to a friend, I got the information that when assembling his computer, on a B550 motherboard with an R5 5600x, the system displayed video in the BIOS without the presence of an offboard GPU.

The motherboard in question is a B550m Aorus Elite: https://www.gigabyte.com/Motherboard/B550M-AORUS-ELITE-rev-13/sp#sp. And it apparently doesn't have any independent onboard GPU.

It is possible?
No. The display may flash something that looks like a BIOS splash screen, but that is not coming from the PC.