I just can't find the logic with the thunderbolt issue, since on Asus the boards that have that DP IN also have USB4, so why connect the graphics card to DP IN to have thuderbolt if it already has it on USB4.
Proart Creator are these Asus motherboards so It is logical to think that they have the ability to capture from the DP IN port, to "create" but I can't find any other explanation other than thunderbolt.