Complex sentence: The technique is frequently used as a means of emphasizing how busy the characters are; it suggests that there is so much to do and so little time to do it in that even traveling time must be used to serve additional functions.
Split into simpler sentences: The technique is frequently used as a means of emphasizing how busy the characters are. It suggests that there is so much to do and so little time to do it in that even traveling time must be used to serve additional functions.