To update this.  Apparently the 5570 laptop has some incompatibilities with the older monitors I was using (as a note those monitors worked fine with a 5550 Precision laptop).   I have replaced the monitors with new monitors (also happen to be dell) and I have not had any issues with displays since. 
I have a 5570 with mostly up to date Windows 11 (maybe fully up-to-date at this point) and a WD22TB4 docking station.  I have the dock connected to one of the USB 4 ports on the left.  The dock has the lastest firmware (confirmed with the firmware update tool) and the latest RealTEK Ethernet drivers installed.  I have updated intel drivers, windows and Nvidia drivers.  Periodically through the day, one of my monitors will go black for about 2 - 3 seconds and then restore. I never know which monitor it will happen with, it could be either one, but it is never both at the time, it is one of them.   I'm at a loss of what else to try here.  I had no problem with my previous 5550 and the same dock, so the monitors and fine, and I've even replaced the cables from the dock to the monitors in hope that was the issue.   Anyone have any suggestions?
5570 with WD22TB4 and 2 external monitors periodically go black and come back on