Walker has not dodged anybody. And I don't think Bayi did.
Coe and Ovett did.
After the 1974 Commonwealth, I don’t believe they raced again until they were no longer 1-2 in the world. Bayi became sick with malaria in 1976 and Walker was smoked by Ovett in 1977. They later ran against each other in some meaningless indoor miles and that was about it.