Complex sentence: While the third thug stares dumbfounded, Data snatches his gun and disables it, and with Picard's permission, he knocks the thug out with a well-placed right cross.
Split into simpler sentences: While the third thug stares dumbfounded, Data snatches his gun and disables it. With Picard's permission, Data knocks the thug out with a well-placed right cross.