Complex sentence: For example, a dramatic convention in Shakespeare is that a character can move downstage to deliver a soliloquy which cannot be heard by the other characters on stage nor do characters in a musical react strangely to another character's bursting into song.
Split into simpler sentences: For example, a dramatic convention in Shakespeare is that a character can move downstage to deliver a soliloquy and will not be heard by the other characters on stage. Another dramatic convention is that characters in a musical will not react strangely to another character's abruptly bursting into song.