They were all a hallucination by Luke after he ate some Force-sensitive Coruscant space-mushrooms
Trip only lasted 10 mins real-time. Then he sobered up, had a quite nice lunch then fell asleep while watching a scifi film about a planet called 'Earth', set in the far, far future, in a galaxy far, far away, on the holoTV.
( ,
Sat 4 Jun 2022, 20:15,
archived)