Complex sentence: The next day, Garfield wakes up in Jon's house and realized that his entire experience may have been a dream, but when he sees his mother departing from Jon's front yard, Garfield knows that she is still looking out for him.
Split into simpler sentences: The next day, Garfield wakes up in Jon's house and realized that his entire experience may have been a dream. However, when Garfield sees his mother departing from Jon's front yard, he knows that she is still looking out for him.