How to go from chapter 8 to chapter 9?

In my last session my players made it through the climactic finale to HoTDQ, with the session ending with the castle crashed into the southern Greypeak Mountains with the players safely escaping and landing nearby.

How did you follow up from this chapter? I’m thinking the most logical outcome is after a day or two a member of the Harpers cast Sending and go find the players asap, followed up with a teleport to Waterdeep and holding the first council meeting promptly after.

Any suggestions are most welcome