Having a conversation with Pittman wasn't Gawain's initial objective, but there were unexpected rewards.
Gawain wasn't able to find out anything involved with the innate character of magic from the Druids' ritual magic. Originally, he thought he could use his transmigrator's open-minded brain and Gawain Cecil's knowledge to comprehend something after witnessing the Druid magic from this 'magic weirdo'. But the fact had proven that he had thought too much. On the other hand, he had heard Pittman's 'tiny bit of understanding' about the Druids' theurgy and magic: 'it isn't because humans stole the god's authority, but the god truncated a power that should belong to humans.'