So thinking in an airport bar watching my flight grow ever more delayed....

Redemption time and post speech pad aren't the same. The post padding could be less than redemption time and then we'd include the non speech audio that failed redemption.

Redemption is just the time for the VAD to find new speech, padding is the amount of non speech to add after we've decided the VAD is inactive. That does make me think that a post speech pad greater than redemption is logically invalid because we would then have to wait longer to get the audio and we would either have to truncate the pad or keep waiting for audio after the vad is inactive