Complex sentence: The Celtics still play on a parquet floor at their current home of TD Garden; however, since most of the original floor was cut up and sold as souvenirs, the current floor combines some sections of the original parquet with newer flooring in the same style.
Split into simpler sentences: The Celtics still play on a parquet floor at their current home of TD Garden; however, most of the original floor was cut up and sold as souvenirs. The floor at TD Garden combines some sections of the original parquet with new flooring in the same style.