The Blues and the Birds do fly in close formation. I am sure they are more that 6’ apart!
Officially... 18 inches, but...
https://komonews.com/archive/how-close-together-do-the-blue-angels-really-fly-about-the-distance-of-your-favorite-sub-sandwich#:~:text=Publicity%20materials%20for%20the%20Blue%20Angels%20say%20the,they%20get%2C%22%20says%20U.S.%20Marine%20Major%20Dusty%20Cook.