The trilogue gives him the luxury of taking a stance of silent or chuckling bystander.
Depending on one's sense of humour, one may find oneself chuckling or laughing out loud whilst reading this book.
Likewise, giving a chuckle does not entail that there is any longer period of chuckling.
I forgive him everything because he said something which has kept me chuckling ever since.
She was chuckling away at that moment ago.
I should guess that he will be chuckling.
It seemed to me that he was chuckling over the discomfiture of his opponents on that issue.
Lawyers are chuckling at the best legal joke for years.