Dan did indeed know how it was. He just nodded, before glancing up at Jack again when he asked his question. "Oh, you know. The usual. A run through the Overlook and Mrs Massey," he admitted, ignoring yet another roque mallet that was now propped up in the corner of the room behind his dad, "and then a huge purple guy had me by the throat instead of her, and he actually snapped my neck. I think that one belongs to Loki."
He reached up and rubbed at his throat after that. The nightmare had to be a memory, he figured, and it would explain the heavy ring of bruising he sometimes saw around Loki's neck. "Did you get those memories? It's this guy," Dan said, and then concentrated hard before a small version of Thanos appeared on the table. He'd been practicing with Kat, and sure, he had the memories of how to create illusions in his head, but he still struggled with maintaining them. So after about five, maybe ten seconds, the illusion faded away.