So I called IR twice. First time I called asking if there was any acquisition discussions going on with VRTX. They said they couldn't comment - which was understandable.
Then it got me thinking, so I called back from a different office phone (later when i was at a meeting at another company's office) so it would have a different caller ID name and number, and asked them if they were having any acquisition discussions with Pfizer. The lady said "No, we don't have any contact with Pfizer".
I wonder if that was just a coincidence that I got 2 very different answers just a few hours apart.