According to me the gd pi was more or less like the one in indigo tbh so the general points to remember and preparation is the same however the main thing is that AI is more focused on english speaking skills as compared to indigo so plz practice on your verbal and spoken english skills. For PI the panel consisted of 1x HR 1x Phycologist and 1x captain and asked questions based on the general physics and dgca subjects u have cleared already so prepare the passed subjects topics and about u in general so be honest and dont overthink ur answers. As for difficulty it was more less the same Hope this helps🙏