Timber rattlers are known for being very laid back most of time.
Ive had several close encounters with no rattle.
An article appeared a few yrs ago about snakes that rattle getting killed.....so the non rattling ones are more prone to survive
Snakes dont hunt people, or take one on willingly. Nor can they strike from more than half body length away....about 2.5 ' for large snake.
Watch where put hands and feet and they arent a concern.