Complex sentence: These gatherings were open to anyone who wished to come, and did not have significant structure or hold any performances; nevertheless in late 2010, through a misunderstanding, members of the club were offered an opening set at Toad's Place in New Haven, Connecticut.
Split into simpler sentences: These gatherings were open to anyone who wished to come, and did not have significant structure or hold any performances. Nevertheless in late 2010, through a misunderstanding, members of the club were offered an opening set at Toad's Place in New Haven, Connecticut.