Funny, I was just through this. First, don't assume that the professionals that you are questioning, have any idea of what is correct.
I saw a new guy for my last one and he was 60? Doing it for many years.
The ECG at first, he said I needed a new one. Na, I says, over 40 it's every 12.
Na, he says it's every 6 months. He refused to stamp me, I refused to go get an ECG.
I said you must have a way to check it here on site? Right? Isn't that a requirement to offer the service?
He comes back, and says "yup" you're good now for every second medical. Same as before 40.
Na, I says, It's "in the previous 12 months".
That means in 90 days all be back for another medical, the previous ECG will STILL be good, and my file will coast for another 9 months.
He just shook his head and left...
Get a hard copy of your applicable ref, fax it, and have it on hand. If they see it, they will comply with the regulations.