In my job I'm using a CM2009 IC between precise VGA controller and VGA output connector. It's stated while in the datasheet for this IC that I can use EMI filters on HSYNC, VSYNC and DDC channels right just after IC and in advance of VGA connector. Though there aren't https://titusjgzrg.ampedpages.com/helping-the-others-realize-the-advantages-of-difference-between-emi-and-emc-filter-58424284