So in The Empire Strikes Back, Luke parts ways with the rest after The Battle of Hoth and trains with Yoda.
In the meantime Han and company evade the Imperial fleet, land in a space worm and then end up in Cloud City.
Some people think there is a plot hole here, Luke's training would have taken a while but the Han/Leia plotline seems to indicate that their events happened over a few days before ending up in Cloud City. Needless to say Luke ends up is Cloud City soon after.
So is this an admitted flaw or are there other explanations?