iPhone 15 USB-C Charge and Video Passthrough Dock - Belkin Thunderbolt?

I'm looking to use my iPhone 15 w/ a USB-C portable monitor and a small wireless keyboard for a lightweight mobile workstation. The iphone works great directly connected to the Asus USB-C monitor, but with just a single cable, both devices are running off battery power.

I'd like to setup a charger that can power both the iPhone 15 and the Asus monitor and allow the video passthrough over USB-C.

I tried a Belkin USB-C 4 port hub, but that doesn't pass the video. Apple support suggested a Belkin USB-C Data + Charge adapter, but while it says it will provide audio passthrough, it doesn't mention video at all.

Belkin thinks the Belkin 5-in-1 Thunderbolt 4 Core Hub will work, but officially it supports MacBook and iPad, not iPhone. It looks like it should do what I want and may provide a lot of flexibility.

Has anybody tried this or something similar? It's a little pricy to buy to try.