No he extracted around 400-600 grafts per day and had around a 20 min break before implanting. I believe his method is to not put too much shock into the area in one session, and let the scalp recover a little before repeating this process. The only downside to spreading the procedure over multiple days is the dam anastheic injections every day as they hurt like a bitch! Even more so when your head is swollen from the previous days. But makes perfect sense from a medical perspective.