I think you will need to clarify what you mean by Macedonians and bulgarians. For example, Macedonia goes back millenia as a people and place, which does not really match the current day republic of macedonia. Check out this image which illustrates the confusion https://www.google.com/search?q=macedonia+republic+vs+historic&client=ms-android-verizon&prmd=nmvi&source=lnms&tbm=isch&sa=X&ved=0ahUKEwj22sPnpcXUAhUo5oMKHSkyA0QQ_AUIDCgE&biw=360&bih=559#imgrc=bDzTwaeWLP81lM:

Also, bulgarians of today are ethnically very different from Bulgarians of, say, 1000 AD