I find the wording of that title to be a bit misleading/confusing. I mean if you have no cardiac output, you are not going to have much of a tracing for very long. Effective CPR will restore a tracing. So I went and read more about their initiative and it's basically intended for non-anesthesiologists to remind them that they need to see ETCO2 tracing to confirm intubation in the trachea.
Regarding this case, I'm mostly uncertain of the roles of the various people involved. It calls the first doctor in the room an anesthestist, but the one that later came in to help and ultimately recognized the problem a consultant anesthetist. That leads me to believe the first one was the equivalent of a resident and the attending later came in.