It seems sort of universal that everyone is more comfortable once they are on the ground after an "incident" in the air. I'd think especially so when someone (not the pilot evidently) comes on the mic and asks if there is a pilot on board. If you don't have any reaction, you are probably dead already.
There's an old pilot saying about weather: "Better to be on the ground wishing you were flying than in the air wishing you were on the ground", and i guess the same applies to heart-attacks.......