Sounds like his underlying medical condition might have had something to do with his death. I don’t recall ever hearing of someone dying within 15 minutes of being bitten by a rattlesnake. It’s gotten somewhat unusual for death to occur at all anymore, with the advent of antivenins.
**** “Sounds like his underlying medical condition might have had something to do with his death” ****
At his age, Running 20’ uphill without being bit could have killed him ... toss in extreme pain and a snake hanging on to him... results may vary... but not far.
I collected a Rabbit once with No Bullet Hole ... I scared it to death ... stress can and does kill.
JMHO