How do you use descent in the same sentence as simultaneously?

(Descent is an abstract noun which means a decrease or lowering. Simultaneously is an adverb which means "at the same time." )

• The two divers began their descent to the shipwreck simultaneously.
• The pilot started the plane's descent while simultaneously turning the seatbelts light on.
• One football team suffered a bad descent into fifth place while another simultaneously rose to first.