Bungalow Bob said
All this talk about the "double-A sided single" makes me think of how The Rutles would have crafted a comedy bit about the extremely rare "Double-B sided single."
As comical as this idea may sound, it nearly did happen only months after the 'Something/Come Together' single appeared. There were stories of 'You Know My Name (Look Up The Number)' being targeted for the "A-Side" to 'What's The New Mary Jane?' before they decided on using the single version of 'Let It Be' instead, which differs from the album version, that would've been a "Double-B sided ...