So... this is probably what Lizzy meant when asked if there was a Luke Skywalker type of cameo on WandaVision. It got cut.
How Benedict Cumberbatch's Dr. Strange Almost Appeared in 'WandaVision'
Marvel Studios president Kevin Feige explains why a planned Dr. Strange appearance would've "taken away from Wanda."www.rollingstone.com
Too bad. It would’ve been nice for there to have been an explicit explanation behind the commercials in the end.