*receives the note and pays Horatio, asking the owl to wait while he reads the note* *decides that rather than waste time working out whether this has anything to do with Snape (and if so, what), it's simpler just to agree to meet Q and find out what this is all about -- after all, whatever it is that the other man wants to discuss, he can always say 'no'* *quills out a reply in the affirmative, and gives it to Horatio to carry back to Q*
... [to indicate time passing]
*arrives at the Bear and Barnacle just before 7pm* *orders coffee and waits for Q*