Excellent. Very relevant in 2020 A practical aspect is the management of oxygen supply which is very high when large number of patients are connected in a Covid-19 hospital. One can refer to a video " HFOT Calculator" on RU-vid as a supplement to this nice video.
When a person eats they are automatically stopping their breathing to swallow whatever they have in their mouth at the time. If however they are holding the product in their mouth while on the device you may have some aspiration.