It came to pass that as soon as he had made an end of offering the burnt offering, behold, Samuel came; and Saul went out to meet him, that he might greet him.
So Jonathan was out wiping out the Philistines and Saul was around blowing the trumpet, and taking the glory and announcing that he had smitten the Philistines so that the Israelites heard that Saul had smitten the Philistines with a great slaughter.