Complex sentence: Although not in its earlier form, the strip adapted to the Ligne claire style pioneered by Hergé, a change taking place when the strip became serialised in Hergé's comics magazine "Tintin" from 1948 to 1959.
Split into simpler sentences: Although not in its earlier form, the strip adapted to the Ligne claire style pioneered by Hergé. This change took place when the strip became serialised in Hergé's comics magazine "Tintin" from 1948 to 1959.