Complex sentence: Along with the tour group, he also meets with Abbe Arnaud, who works at the local church and helps him with his investigations into the area, pointing him to a Templar researcher living in the valley.
Split into simpler sentences: Along with the tour group, he also meets with Abbe Arnaud, who works at the local church. Arnaud provides some useful information and helps him with his investigations into the area, by pointing him to a Templar researcher living in the valley.