Complex sentence: In the early days of the Allman Brothers, Betts played a 1961 Gibson SG, which he gave to Duane Allman in 1971 to use as an all-slide guitar, and then started to use a 1957 Gibson Les Paul Goldtop.
Split into simpler sentences: In the early days of the Allman Brothers, Dickey played a 1961 Gibson SG, which he gave to Duane Allman in 1971 to use as an all-slide guitar. Dickey then started to use a 1957 Gibson Les Paul Goldtop.