Complex sentence: Less than a year later, Tom was hired by Buzz Bennet to work at KCBQ, then in 1972 Tom was hired by Bobby Ocean, and returned to 136/KGB.
Split into simpler sentences: Less than a year later, Tom was hired by Buzz Bennet to work at KCBQ. In 1972 Tom was hired by Bobby Ocean, and returned to 136/KGB.