Complex sentence: In the summer of 1943 he returned to Barcelona to work in the Banco Hispanoamericano and met novelist Benítez de Castro, who introduced him in the media as an art critic.
Split into simpler sentences: In the summer of 1943, he returned to Barcelona to work in the Banco Hispanoamericano. He met novelist Benítez de Castro, who introduced him in the media as an art critic.