PlayStation Signal Passed At Danger - When There Was No Signal (gwe - Ps4)

So I had this on step 21 of the GWE journey

Train was 1B35 Paddington to Swansea, DSD and AWS were originally isolated on departure from Paddington, but about 8-10 minutes in, I un-isolated them - though no alarm sounded when this bug happened. The click you hear is me taking the power handle from max to notch 4

here's the tweet i made, which includes the video

https://twitter.com/i/status/1327801445459128327

anyone else have anything similar, or on this particular service at this point?