In my undertaking I'm using a CM2009 IC between real VGA controller and VGA output connector. It can be outlined in the datasheet for this IC that I can use EMI filters on HSYNC, VSYNC and DDC channels suitable after IC and right before VGA connector. While there isn't any https://hud-helmet12331.isblog.net/the-fact-about-emi-and-emc-filter-that-no-one-is-suggesting-48512437