Possible Clues:

• Speak at length
• Speak at some length
• Talk at length
• Speak at length from keep on Scottish river
• Speak for a long time in hotel, long-standing, overlooking Scottish river
• Speak at length being hit by torpedo, say, on river
• Declaim
• Speak lengthily, maybe preach
• Speak lengthily, preach
• Offer to make a speech