And also leads to speech impediments like Obamas. I'd say this is a brilliant find and more than a guess.
A possibilty. His handlers would have been well aware of his handicap right from the start. I recall the video from during the campaign when he stops, repeats himself, waits, then says 'I can't hear you' - I always interpreted that to mean his incoming transmission had been cut off!
Wish I could find that video again...right from the start, they couldn't let him speak without INPUT!