In Sherlock episode “The Lying Detective”, the phrase serial killer is uttered many times, always stressing the first word – as if the second were a given, even when (for the speakers) any killings are hypothetical. That impaired my enjoyment of a generally well-written episode. (Well, much better-written than its neighbors.)
I’ve noticed the phenomenon before: when a phrase becomes a fixed lexeme, many people, perhaps most, are deaf to its components. For my ex, the phrase beef jerky was in such perfect union that she often said “turkey beef-jerky”. Not Always Right has occasional tales of restaurant workers and customers for whom the arbitrary name “bacon lettuce & tomato sandwich” does not imply the presence of bacon.