Picking up on the unasked question, Yugi answers, "No, he doesn't know about the Nexus, but I think it's the time discrepancy more than anything else."

"That's about right," Ed grumbles as Kat sets a plate bearing two grilled cheese sandwiches on it on the coffee table in front of him. Ed pounces on the food and starts scarfing it down. "What's the Nexus?" he asks between bites.

If it isn't obvious, Ed's manners are a bit... lacking.