Unused to wonder if the radio announcers that are always reciting the station call letters found that the letters stopped sounding like individual sounds, and the whole recitation became a sort of “word” for them. Like “You’re listening to 102.9FM WBLM!” Did it stop being “double-you bee ell emm,” and turn into more of a mashup of “dubbleyabeeyelmm”
True, the difference is pretty subtle, especially to a listener, but I wonder strange things sometimes…