Once the riot was over they made a quick trip to revisit several places. It reads as though this is a whirlwind tour.
The people in the first part of this chapter seems like a line-up in the sport's page before a ball game. These are the players God has assembled at this time for this game. It must be an all-star game.
The Eutychus episode is both hopeful and and hilarious! The length of the meeting as well as the depth of the tragedy are both comic in proportion. I think this is an encouragement to long winded preachers. Twice Luke records how long Paul talked.
They must have been gone from Ephesus for a considerable time because the trip back was a deliberate decision, even though they were just there only 15 verses ago!