Re(1): Listener 4396 - The Listener Audience by Pointer [acronyms] IP: 188.8.131.52 Posted on May 21, 2016 at 09:37:31 AM by Chris Lear
A TLA is always a three-letter initialism in everyday use. So the examples are definitely TLAs, and using real acronyms would be peculiar in context. TLA is itself a TLA, of course. The notes make a similar point.