Wrong approach. Thye better one is to call Sara, tell her that you were at a function where Don was present and he made some interesting comments that you did not understand because he was slurring his words. Then ask your question but phrase it like it was a statement. For example Will the deal with Pfizer be announced before the San Diego conference or during it. Then if she says "what deal", you reply "oh, they haven't told you yet?" Listen for gasps, quavers and gurgling sounds.