Mikey also said we "here" screams and shit. Don't rely on his linguistic prowess.
Blackmage successfully visited the killer, he didn't have to go anywhere...the caroler would also have successfully visited imo. At the very least, the journo would have noted the sleepwalker's presence. They wouldn't visit at different times, nothing I read hints at that anyway. The caroler might have visited the stalker, and he could have visited someone else like the journo. Could have even visited Blackmage for all we know.