Complex sentence: In 1871, the formal links between the Victorian Cobb & Co company (taken over by Robertson and Wagner) and Rutherford's New South Wales and Queensland operation were finally dissolved, but harmonious relations continued.
Split into simpler sentences: In 1871, Cobb & Co in Victoria finally split from Rutherford's New South Wales and Queensland operation. The formal links with the Victorian Cobb & Co company (taken over by Robertson and Wagner) were dissolved, but harmonious relations continued.