Machbeth most likely questions Banquo about his journey in Scene 1 because Macbeth?

Here is the answer to the given question above. Macbeth most likely questions Banquo about his journey in Scene 1 because Macbeth needs information to give to the murderers later. Macbeth hires murderers to kill Banquo and Fleance so Macbeth's unborn children can inherit his throne. Hope this answers your question.