Complex sentence: In 1957, he returned to NBC, again as a correspondent and from 1957 through 1964 starting with the Dave Garroway hosted "Today" Show he did all the interviews out of Washington during that time for "Today".
Split into simpler sentences: In 1957, he returned to NBC, again as a correspondent. From 1957 through 1964, starting with the Dave Garroway hosted "Today" Show, he did all the interviews out of Washington during that time for "Today".