Add where "multiple columns match these columns on another board"

Hi, I am trying to build out an automation that links 3 different boards into one board. I am using mirror columns to do this, and I am using the match function to automate this. Currently I am matching items by date, as it is a way I can link subitems and items together. This is the reason why I cannot match it by name. However, sometimes I have multiple items with the same date, so the mirror isn’t working properly.