Complex sentence: Cheney's record as CEO was subject to some dispute among Wall Street analysts; a 1998 merger between Halliburton and Dresser Industries attracted the criticism of some Dresser executives for Halliburton's lack of accounting transparency.
Split into simpler sentences: Cheney's record as CEO was subject to some dispute among Wall Street analysts. A 1998 merger between Halliburton and Dresser Industries attracted the criticism of some Dresser executives for Halliburton's lack of accounting transparency.