Jordin converses with Waverly by picking up Napoleon's hand, which is gripping the communicator. But Solo shouldn't have a firm hold of the device because he has been knocked unconscious.
Olga presses the eraser 3 times to open the secret passage. Illya only presses down once to do the same.
Sir Norman states that 30 million died in World War One. Estimates are that 16 to 19 million perished during the war.
In briefing Mr. Waverly on the resume of Dr. Benjamin Lancer, Napoleon Solo states that Lancer "shared the Nobel Prize in 1952 for biology". There is no Nobel Prize in biology (the closest related field in which a Nobel could be awarded is Physiology and Medicine).