Complex sentence: Neal would attend his brother's performances at the The Improv in New York City on weekends and hang around with comedians such as Ray Romano, Dave Attel, Mike Royce and David Juskow.
Split into simpler sentences: Neal would attend his brother's performances at the The Improv in New York City on weekends. There he got to hang around with comedians such as Ray Romano, Dave Attel, Mike Royce and David Juskow.