Hi, got the Man Utd match on (after Chelsea wsl gone 2 up) and the pic isn't 4k. Also LG TV doesn't show HLG HDR in top right or HDR picture mode in menu.
It certainly looks better than sky sports HD. I can't stand SD or even HD for footy. Not sure if it's because of my colour blindness but in HD the pitch is just a blur of green. In UHD I can see the grass even when camera moves fast.