It's a bit of a giveaway. It simply doesn't make sense. When Bond looks at Xenia through the telescope, it switches eyes. Bond's flight to St Petersburg is booked in his own name. Surely the KGB would notice.
Bond uses an Americanism, 'Time for a station break'.
Bond can't use the oriental typewriter, yet according to You Only Live Twice he had a degree in oriental languages. The TND novelization got aroun this by suggesting he made this up simply to annoy Moneypenny. Bond was found by spotting his car, but this was cut in half earlier.