Question about Focusrite Scarlett 2i2 3rd gene

In your case, I would buy a small mixing console that has an integrated headphone amplifier (computer and PS5 via the analogue interfaces to the mixing console). Your idea would also work in principle, but then you would have to switch on the PC every time you want to play PS5.

Oh, all right! Now I understand.
Thank you for the detailed explanation and the link to the products!
Also how to connect the whole thing correctly!
The products are ordered.

Thank you.