So they gathered up the burnt grain and stored it in the palace? I don’t think so.
Anywho, Hazor is way over by the Jordan in Upper Galilee, a long way from Philistia. Or a long way as things went back then. It’s only 125 miles or so, a two hour drive on the interstate.
The Philistines had conquered all of Judah in that area?
Judges 15:11 “Then three thousand men from Judah went down to the cave in the rock of Etam and said to Samson, “Don’t you realize that the PHILISTINES ARE RULERS OVER US? What have you done to us?”