Dwight says that he "never sits during a sales meeting," but is seen multiple times in earlier seasons doing just that.
Early on, Erin tells us that Andy left "last week" for the Bahamas on the sailboat. However, after Andy's video call to the staff at the office and seemingly like he losing his mind for being at sea for so long, Darryl states dryly that he has only been away for two days.
If the last episode was on a Friday and Andy set sail in the evening, Monday morning would be 2 days and about 15 hours later.
When Jan asks Pam to spell Astrid's name, she should be able to see it on the screen because the last slide of the slideshow is still on. Response: Pam misspells the name on purpose to appear to agree with Jan that the spelling of the name is difficult.