Dell Vostro 7620 Computer Dell Dock Dell Monitors Screen Keeps Going Blank

I am having a problem with a dual monitor setup.  The monitors periodically go blank for 3~4 seconds, just one at a time, the other stays on uninterrupted.  The data continues uninterrupted, (e.g. I can keep typing and it does not miss anything). 

System:

• Dell Vostro 7620 Laptop, Windows 11 Pro, Version 22H2
• Dell Dock, Thunderbolt: Model WD22TB4
• Dell monitors 1920x1080, Model P2312HI

The monitors are older units, however they have never had this problem before.  The prior setup was a Microsoft Surface Pro and dock which worked perfectly.

I have been chasing this issue since purchasing the new Dell computer.  So far, I have tried the following:

• Updated everything (Windows, drivers, etc.), both manually and using Dell update. 
• Deleted drivers for all video and monitors multiple times, replaced them with both Dell versions and version obtained directly from the manufacturer for the cards (Intel Graphics and NVIDIA).
• I reported this problem to Dell, they replaced the computer and dock with completely new units of the same model.
• The cables are display port (from dock) to DVI (on monitor) - Both cables were replaced twice with different brand cables.
• I even changed the hard drive, loaded Windows 10 Pro on the laptop to test the issue.
• I checked the monitors again with the previous computer, and there were no issues with screen blanking.
• I changed the monitor input from Auto to DVI

It seems that nothing I have done has any effect on the blanking issue.  

Any ideas on how to solve this?