The soliloquy's a tricky beast. It's not a monologue - as I'm sure Syndrome would tell you - but rather a sort of thinking aloud, the kind of thing which would be a voiceover in a screenplay. The off-coloured bit by Macbeth is the former, not the latter. It's a short one, but then he's back to conversing with the murderer.
I actually got to teach this one today. Small educational world sometimes.
I wonder if I'm missing something. Have we got to the other messenger yet, or is he still to come?
Other messenger? I'm not sure what you mean, sorry.
When Clarence introduced the play, he clearly stated in his last sentence on 20th November, that there's more than one messenger about to arrive at the palace. Maybe we haven't got that far yet, I'm not sure.
Oh! That messenger! See tomorrow... ;)