My Guinea Cock hates turkeys. Our 6 BB Whites are terrified of him.The part about the attacks vs a turkey is missing the information that the turkey certainly could and would kill the attacking guinea but they aren't fast or agile enough to catch the attacking guinea.
It is my experience that guineas bond very quickly and easily with turkeys.
We had 6 BB Bronze back in 2019(I think). One of them ripped off one of the Guinea Cock's wattles, & ate it. It think that's the reason for his hate of turkeys. He loves our Bourbon Red Turkey hen though, but hates the others.