Lineker asked him at HT (or maybe it was FT, I can't remember and I've got no VAR to go back and check) to clarify his understanding of the rules saying that he believed the rules were that VAR could only check for specific things, namely red card offences missed by the officials, and not for other things, such as issuing yellow cards/second yellow cards ...etc. (which was and still is my understanding as well).
Walton, visibly sweating like an ant under a magnifying glass, bumbled on about VAR not telling the ref to issue a yellow, but simply to go and have a look at the incident, and that it was obviously the ref's opinion that it wasn't worthy of a red and so issued a yellow, which he then said was his prerogative, or other such bollocks, then ending the discussion with a definitive, "so no Gary, he wasn't wrong".
I have never heard such bullshit in all my life.