Kvm GPU passthrough Debian 12

I have a Debian 12 in a machine where I have installed Windows 10 as a Guest using KVM (Managed with Virt-Manager). The machine has 2 graphic cards. 1) GeForce RTX 2060 12GB (I want to use in the host) 2) AMD Radeon R5 220 2GB ddr3 (I wanted to use in a Guest Windows 10) I follow mainly this link [kvm-gpu-passthrough](https://drakeor.com/2022/02/16/kvm-gpu-passthrough-tutorial/) In the Windows the device manager shows the Amd Radeon graphic cards and the Red Hat QXL controller. In the Windows I have install the driver from [AMD driver r5-220](https://www.amd.com/pt/support/downloads/drivers.html/graphics/radeon-r9-r7-r5/radeon-r5-200-series/amd-radeon-r5-220.html) but when I try to run the AMD program it says "No AMD graphics driver is installed or the AMD driver is not functioning properly I have configured the /etc/default/grub file as

GRUB_CMDLINE_LINUX_DEFAULT="quiet modprobe.blacklist=radeon"
GRUB_CMDLINE_LINUX="amd_iommu=on iommu=pt "

Using the Virt-Manager I have added 2 PCI associated to the AMD card

and

I have used the script

!/bin/bash
shopt -s nullglob
for g in /sys/kernel/iommu_groups/*; do
    echo "IOMMU Group ${g##*/}:"
    for d in $g/devices/*; do
        echo -e "\t$(lspci -nns ${d##*/})"
    done;
done;

in order to get this 2 "pci devices". This script gives me

IOMMU Group 28:
	0b:00.0 VGA compatible controller : NVIDIA Corporation TU106 [GeForce RTX 2060 12GB] [10de:1f03] (rev a1)
	0b:00.1 Audio device : NVIDIA Corporation TU106 High Definition Audio Controller [10de:10f9] (rev a1)
IOMMU Group 29:
	0c:00.0 VGA compatible controller : Advanced Micro Devices, Inc. [AMD/ATI] Cedar [Radeon HD 5000/6000/7350/8350 Series] [1002:68f9]
	0c:00.1 Audio device : Advanced Micro Devices, Inc. [AMD/ATI] Cedar HDMI Audio [Radeon HD 5400/6300/7300 Series] [1002:aa68]

and I have supposed that the Group 29 is the one I have to add to the Virtual Machine I do not know if I am missing something.