
If the question was more related to wildlife and landscapes, would you lean to the 5DIV more than the R6? I have the 7DII and it will likely continue to be my dedicated sports body but I will probably be doing less sports after track season this spring.
Vs. an R6, for a body that I intend to use for wildlife and landscapes, I'd probably take the 5D4. But I have had no problem with the 5D4 for wildlife,. Many would prefer the R6's eye AF. (I would too) but I am not sure I'd be willing to give up the 5D4 sensor for the AF advantage.