Change one letter in the name of an NFL team. Do it again for their main rival. These two words are synonyms of the name of a third NFL team (in the other conference). What teams and words are these?
Note: I added the "main rival" part to disambiguate between the intended answer and a few other possibilities. But if you submit any trio of team names that reasonably fit the rules, I'll count it.
The solution is at the bottom of the July 2022 newsletter.