Complex sentence: Since then controversy has raged: why was high camp was moved higher? did the oxygen really run out several hours below the summit as claimed, and if so, when exactly did Lacedelli and Compagnoni start out for the summit ?
Split into simpler sentences: Since then controversy has raged: why was high camp was moved higher? Did the oxygen really run out several hours below the summit as claimed, and if so, when exactly did Lacedelli and Compagnoni start out for the summit?