Originally Posted by
SteveC
Was it from a radio transmit delay, or from a delay in the voice activated intercom used in-cockpit? I remember back in the days, using an intercom and having to make some kind of noise to get the system to activate, but if you just started talking it would ...ut off the first part of the first word.
I always assumed that this was the origin of "annnddd..."

Interesting, I had thought it was because of a three second delay, and "and" happen to be able to take up those three seconds rather nicely. So I'm not really sure, never heard about what you mentioned, but it does make sense.