"I'm really not sure. Less than an hour now, I'd think," Lori said, wiping his hands on his robes. "I'm sorry I can't tell you more than that." He gave Al one last look, and even though he knew he was doing much better and was out of danger for now, he hated to leave him. But there were others who needed help, and Snape would keep Al safe.
"And you, remember what I said. No strenuous activity, and that includes walking all over the field. Limit yourself as much as you can while still remaining awake," he told Burke, and then smiled at him.