Just tried the second run of the fourth chapter of the journey, ICE 886. Somewhat, 17km before Kassel around 13:20 o'clock, the LZB "out of the blue" suddenly setted the target speed to zero, while the distancemeter suddenly vanished, and the train came to a stop after some kind of emergency braking. I wasn't able to get the train moving again, even shutting it down completely, turning off LZB/AFB, refilling brake pipe (Brake pipe pressure was showing 0 Bar), the target speed indicator still showed '0'. The route map showed no other train in front of me.
