"Are you aware that ...?"

• "That's not really what you meant . . ."
• "Can we get back to the subject, please?"
• "I hate to interrupt, but ..."
• Polite cough sound
• Throaty comment
• "Um ... excuse me"
• "Um, excuse me . . ."
• Word of interruption
• Affected cough to gain attention

Wikipedia Word definitions in Wikipedia