Dont recall any "confusion" over similar call signs on this one, but at one time the Wisconsin Army National Guard used the call sign of "Bucky", followed by the 2 digit id of the PIC (pilot-in-command). Normal ATC response, when outside our local area, was "aircraft calling (atc facility), say ID
again. This was usually repeated 2, 3, or more times. They later change the callsign!
Also, try changing the first letter of the (Bucky) call sign. Regardless of which letter you use, the call signs all sound alike!
The "Bucky" callsign originated from the University of Wisconsin mascot, Bucky Badger. Strangely enough, the person who came up with that callsign never admitted it, but all the pilots knew who it was!