I listened to the interview/analysis rather than watching as body language does not interest me
I can speak German so understood some parts slightly differently, but overall thought the analysis was high quality.
One key factor they missed, is that HB is coming up as a key witness not in the MM trial, but in the new rape trials. I think his threats(?) to CB more likely related to that - than the MM case. After all the whole business of the tapes happened when CB was in prison before MM went missing. So surely when he references having really seen the tapes and CB needs to believe that - he must be referring to the upcoming trial?
To me, he seemed mostly upset that this all reflected badly on him and I guess he does not want to testify again.
All in all, very strange stuff.