Complex sentence: They then developed a character dubbed "Boxman", which would examine the engines efficiency; they latter presented the idea to Sony Computer Entertainment, who gave permission to precede on the project following the completion of "Crash Team Racing".
Split into simpler sentences: They then developed a character dubbed "Boxman" which would examine the engines efficiency. They latter presented the idea to Sony Computer Entertainment, who gave permission to precede on the project following the completion of "Crash Team Racing".