It was fun to meet the Tin Man and see him with young Zelena, but their friendship was REALLY under developed. Even a throw away line that established they had been good friends for a long time after their first meeting would’ve helped. I an assume that they became good friends after that and spent time together, but that’s just my assumption. Otherwise, they just met one time, and he expects the WICKED Witch of the West to want to help him?