Jeff Van Gundy certainly thinks so and took to the airwaves to make his point.
"Pat Riley is rolling over in his seat right now if he thinks this is a flagrant foul," Van Gundy said, referencing the Heat president that used to coach the team. "He saw harder hits in his practices in Miami than this."
James, for his part, said at halftime that he had a little "whiplash" in his neck, which explains his delayed reaction. The nerves can sometimes take a split second to manifest themselves, so it's possible James didn't feel the pain until he fell over.
In any event, Chandler was originally called for a flagrant-2 foul, which would have resulted in an ejection, but it was downgraded to a flagrant-1. However, it was his fourth personal, and it certainly didn't help the Knicks' chances. The Heat, fueled by James' game and his flopping, ended the half of a 24-2 run and took a 23-point lead into halftime.