Midatlantic Accent

With some recent discussion on the list about different accents and
dialects of English, I decided to ask the list about something:

In Salman Rushdie's "Satanic Verses" (one of my all time favourites
by the way), a character is described as being
"midatlantic-accented."  In Paul Brian's study guide to the novel he
defines this as  "An accent calculated to be neither precisely
British nor precisely American, but somewhere in between."

Can anyone tell me any thing else about a "midatlantic accent" ?
What characteristics would make an accent neither precisely British
nor precisely American?  I expect accent isn't the only thing - word
choice would be important.  Grammar as well?

Curious,
Eamon

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