Complex sentence: Later in the 1991 playoffs, in the Wales Conference Finals, against the Boston Bruins, Samuelsson and Cam Neely collided knee on knee, a collision that became infamous because it contributed to a condition that caused Neely to end his career prematurely.
Split into simpler sentences: Later in the 1991 playoffs, in the Wales Conference Finals, against the Boston Bruins, Samuelsson and Cam Neely collided knee on knee. A collision that became rather infamous because it contributed to a condition that caused Cam Neely to end his career prematurely.