Complex sentence: Brahms wrote it for the cellist Robert Hausmann and violinist Joseph Joachim, and it was in part a gesture of reconciliation towards the latter with whom he had not been on good relations for some time.
Split into simpler sentences: Brahms wrote it for the cellist Robert Hausmann and violinist Joseph Joachim. It was in part a gesture of reconciliation towards the latter with whom he had not been on good terms for some time.