I have my Thinkpad Laptop (No nvidia GPU) and a Thinkpad USB3.0 Dock that connects to dual monitors via two HDMI cables without any issue.
I do not need to use displaylink driver. I have no idea why do you need it?
Check if it is avaible in the kernel
$ sudo modinfo udl
If the module udl not found, try to switch to the kernel 5.19 .