Complex sentence: The most famous amalgamation was with Lanus in 1934, but it did not last long, and the clubs were separated in 1938 Talleres were relegated and have never returned to the Primera División.
Split into simpler sentences: The most famous amalgamation was with Lanus in 1934, but it did not last long, and the amalgamation soon separated into the two clubs. In 1938 Talleres were relegated and have never returned to the Primera División.