Prince Radziwill was not in Berlin when Chopin arrived, and, although he was expected, perhaps never came, or came too late to be of any use.

As to Lichtenstein, his time was too much taken up by his duties as secretary to the congress.

Had this not been so, the professor could not only have brought the young artist in contact with many of the musical celebrities in Berlin, but also have told him much about his intimate friend Carl Maria von Weber, who had died little more than two years before.

Lichtenstein's connection with Weber was probably the cause of his disagreement with Spontini, alluded to by Chopin.
The latter relates in an off-hand way that he was introduced to and exchanged a few words with the editor of the Berliner Musikzeitung, without mentioning that this was Marx.

The great theorist had of course then still to make his reputation.
One cannot help wondering at the absence from Chopin's Berlin letters of the name of Ludwig Berger, who, no doubt, like Bernhard Klein, Rungenhagen, the brothers Ganz, and many another composer and virtuoso in Berlin, was included in the collective expression "distinguished musicians." But one would have thought that the personality of the pupil of Clementi, the companion of A.Klengel, the friend of Steibelt, Field, and Crotch, and the teacher of Mendelssohn and Taubert, would have particularly interested a young pianist.