When a person dies who is then Returned, do they come back essentially immediately? According to Llarimar it sounds like a quick process...
"When we found you dead, I lost hope. I was going to resign my position. I knelt above your body, weeping. And then, the Colors started to glow. You lifted your head, body changing, getting larger, muscles growing stronger."
When they do come back, are they unconscious? I only ask because as Llarimar was holding him when he changed, if he came back right then, Lightsong's first memory would be of this man who was to be his priest holding him. I assume this would be something Lightsong would have asked about numerous times, why he was with Llarimar when he died, so it seems to me a Returned must be unconscious for a while in order to give them a chance to be brought to the Court of the Gods without being exposed to their family, whom they were probably around when they died.
It's usually a quick process, but not standardized. It could take hours, or longer, but generally does not.
It's something between what you're saying, and instantaneous waking up. More like they start to glow, and the transformation begins, then they wake up and stand. But they're confused and disoriented, and Lightsong was told his priests were gathered as soon as he started glowing, so that they could greet him as he came to himself. He never had reason to question, and that moment is fuzzy anyway. (As evidenced by him not remembering the event, and needing to be told about it.)
At least, that's my rationale as I remember it. It's been ten years at this point, so I could be fuzzy on the details. :)