What is required in order to run dual 4K @ 120Hz monitors on Macbook Pro M4?

What is required in order to run dual 4k monitors at 120hz on a Macbook M4 Pro? Apple says it can handle that but I have yet to figure out a way to do it. I have two macbook m4 pro laptops (13"/15") and I have not been successful with either one.

I have tested various different connectors at this point. Such as USB C to HDMI 2.1 connectors that have the driver flashed to work, HDMI 2.1 to USB C cables, powered USB-C to HDMI 2.1.

I can't get both displays to get signal at the same time. Each one works individually at 4k @ 120hz but two of them won't work together which means its a throughput issue. But the M4 pro is supposed to be able to handle 4k @ 120hz just fine.

USB-C To HDMI (Monitor 1)

Macbook PRO HDMI Port to HDMI 2.1 (Monitor 2)