You're welcome!!
Hard to say, but there are surely similarites, that may cause an "Anfangsverdacht" in german. That means, that german LE may get attention for those similarities. Not more, not less.
But that is not enough to charge someone for a crime here and that's normal. The times of inquisition are over for a long time. There are also clues of a former worker at the place where IG vanished, that has been prisoned for abusing and killing little boys, called SS.
Who is SS?
Of course there may be evidence of knowledge between CB and SS. I don't know. Maybe that's part of LE's investigation. Maybe over darknet.
The fact is, CB was close to the place at the time, but for german investigation, this may be just a verdict and never an evidence to charge someone. Prosecuters in charge ruled him out due to the fact, his mobile was not connected in the area at the time. To me that means nothing, but if there isn't more.....what to say?!
Prozess um Silvio S.: Verfahren um Kinderdoppelmord zieht sich hin - Berlin - Tagesspiegel
Christian Brueckner is linked to FOURTH unsolved case | Daily Mail Online