Friday's replay had to be pre-planned...
She had to leave the stream open/active and set the timer for playback.
How long, I don't know... The stream is left open with no server error messages... All I remember was silence about 6 minutes before podcast time.
If anybody stopped by earlier in the day (or hung around after her show was done) and paid attention to her streaming status, we would know a lot more. She has been known to play mix CDs without any live verbal interruptions. Line noise would have been noticeable. I don't recall if I heard any.
Eh, nevermind...