The above link is just how the test must be done for the FAA to accept it if a graded exercise test is needed based on other findings, not a regular part of a flight physical.

If there's an abnormality in the ECG or history of heart disease the FAA wants to see additional testing done (likely not by the Aviation Medical Examiner doing the flight physical) but if there isn't then it's just one ECG after age 35 and then an ECG every 6 months after age 40 as part of the physical visit.

Every Airline Transport Pilot over 40 does a physical every 6 months. If he had bypass surgery as this indicates then he was on a special issuance and would have done at least the graded exercise test you list above. The criteria for issuing the special issuance with a bypass or heart attack is here. He would have had to done the test and brought in all test results, labs, status report from cardiologist, etc, and then a current status report and any labs done at every 6-month physical ongoing.