A cautious explanation for Cunningham's sudden death

How plausible is the suggestion that Cunningham died from a heart attack?

It is plausible, especially if a heart attack triggered a fatal arrhythmia, but the panel presents that as a medical inference rather than a confirmed diagnosis.

The question refers to Cunningham dying suddenly in a taxi while travelling between a club and a station. Dr. Dan regards a fatal arrhythmia associated with a heart attack as a plausible explanation for so rapid a death. The response does not claim access to a definitive medical record and therefore remains conditional. The distinction separates a medically reasonable reconstruction from a documented cause of death.