To shoot the breeze means to chat or converse aimlessly or casually, which is what he wanted to do if the person he was speaking to had a free minute.
Context: "Since I had time to kill while she shops, I thought I would stop by and chat aimlessly or casually if you have a free minute."
Hypothesis: Since I had time to kill while she shops, I thought I would stop by, shoot the breeze if you have a free minute.
Based on the context, is the hypothesis true, false, or unknown?