Multiple displays shared by two PCs, my plan did not work, need to come up with a new one

invalid@example.com (mikeymikec), mikeymikec
Thu, 01 May 2025 21:13:10 +0000
Displays

PC1: My wife's desktop PC which has a GeForce 760 in (outputs: 1x DVI-I, 1x DVI-D, 1x DP, 1x HDMI)
PC2: My wife's work laptop, Intel recent gen (maybe 12/13) iGPU, has 1x HDMI and 1x USB-C

Displays:
Monitor 1: Iiyama XUB2293HS (1x DP, 1x HDMI)
Monitor 2: Iiyama XUB2293HSU (1x DP, 1x HDMI, also USB and audio in jack)
TV (HDMI) - only relevant for PC1 / the desktop PC

Ideally the laptop is going to see three displays (internal screen, plus both monitors)
Ideally the desktop is going to see three displays (both monitors plus TV)

My original plan included a DisplayPort to DVI cable, but it only works with DP as the source and I've confirmed the cable works on a new PC.

Original plan:

Desktop PC:
DP -> Monitor 1 DP
DVI -> Monitor 2 DP
HDMI -> TV

Laptop:
USB-C hub HDMI 1 -> Monitor 1 HDMI
USB-C hub HDMI 2 -> Monitor 2 HDMI

The laptop config appears to work, no surprise there.

With regard to the desktop, I've got this to work:
DP -> Monitor 1 DP
DVI -> DVI to HDMI adapter ->...