They both shift their positions until they sit facing one another. Harry has theories; if Riddle was able to essentially transmit fabricated visions to Harry through legilimency, why can’t Harry do something similar to someone else? His transmission wouldn’t be a fictitious memory, but instead, his knowledge of Parseltongue. He has no idea if it’s going to work, but who’s to say whether it will or won’t? Their lessons on Parseltongue have had...limited success. They’ll give this method a shot, and if it doesn’t work, they’ll buckle down harder with the proper lessons.